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<h3>
Simon Peyton Jones pushed to branch wip/T16762
at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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<h4>
Commits:
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<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4186227ec3956fc99c3fd117e3659634df260808">4186227e</a></strong>
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<span>by Simon Peyton Jones</span>
<i>at 2020-09-23T15:58:31+01:00</i>
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<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">More wibbles --- getting there
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<h4>9 changed files:</h4>
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<a href="#9355bef855426caf5f526925edf351b20f9a86c4">
compiler/GHC/Tc/Gen/HsType.hs
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<li class="file-stats">
<a href="#eade747fa0a15693c67617629e286714fce958e4">
compiler/GHC/Tc/Gen/Sig.hs
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<li class="file-stats">
<a href="#54436e21ea530a66a8a71bcc01c836f4740b8f02">
compiler/GHC/Tc/Solver.hs
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<li class="file-stats">
<a href="#83d23a46bb6cdc8b1edc16f1fd2c8f5c53e2c9ca">
compiler/GHC/Tc/TyCl.hs
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<li class="file-stats">
<a href="#3b6d78a50c8462304f843b952a88e531718dbbd2">
compiler/GHC/Tc/Types/Constraint.hs
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<a href="#74295edeac870ee7f2f3484ebaffab5c948b735a">
compiler/GHC/Tc/Utils/Unify.hs
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<a href="#04a77352fb354d4e0af3cf974e30314c29b0f708">
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+
testsuite/tests/polykinds/T16762.hs
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testsuite/tests/polykinds/T16762a.hs
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<li class="file-stats">
<a href="#37bb83d0a916288b2296ba25cdbbef228eed6484">
testsuite/tests/polykinds/all.T
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<h4>Changes:</h4>
<li id="9355bef855426caf5f526925edf351b20f9a86c4">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4186227ec3956fc99c3fd117e3659634df260808#9355bef855426caf5f526925edf351b20f9a86c4"><strong>compiler/GHC/Tc/Gen/HsType.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -31,9 +31,10 @@ module GHC.Tc.Gen.HsType (</td>
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<pre style="margin: 0;"> <span id="LC31" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">bindExplicitTKBndrs_Q_Tv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">bindExplicitTKBndrs_Q_Skol</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC32" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC33" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">tcOuterSigTKBndrs</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">scopedSortOuter</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">tcExplicitTKBndrs</span><span class="p">,</span></span>
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<td class="diff-line-num new new_line" data-linenumber="35" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">bindOuterSigTKBndrs_Tv</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">bindOuterFamEqnTKBndrs_Q_Skol</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">bindOuterFamEqnTKBndrs_Q_Tv</span><span class="p">,</span></span>
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<pre style="margin: 0;">-<span id="LC36" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">bindOuterSigTKBndrs_Tv</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">bindOuterSigTKBndrs_Skol</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC38" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Type checking type and class decls, and instances thereof</span></span>
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<pre style="margin: 0;"> <span id="LC40" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">bindTyClTyVars</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">tcFamTyPats</span><span class="p">,</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="124" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="125" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -124,7 +125,6 @@ import qualified GHC.LanguageExtensions as LangExt</td>
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<pre style="margin: 0;"> <span id="LC125" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC126" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Maybe</span></span>
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<pre style="margin: 0;"> <span id="LC127" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Bag</span><span class="p">(</span> <span class="n" style="color: #333;">unitBag</span> <span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC127" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Bitraversable</span></span>
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<pre style="margin: 0;"> <span id="LC128" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">find</span> <span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC129" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad</span></span>
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<pre style="margin: 0;"> <span id="LC130" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -381,15 +381,11 @@ kcClassSigType :: SkolemInfo -> [Located Name] -> LHsSigType GhcRn -> TcM ()</td>
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<pre style="margin: 0;"> <span id="LC381" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- normally done right before adding a binding to the context), and then we</span></span>
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<pre style="margin: 0;"> <span id="LC382" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- can't set kappa := f a, because a is local.</span></span>
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<pre style="margin: 0;"> <span id="LC383" class="line" lang="haskell"><span class="n" style="color: #333;">kcClassSigType</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">names</span></span>
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<pre style="margin: 0;">-<span id="LC384" class="line" lang="haskell"> <span class="n" style="color: #333;">sig_ty</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSig</span> <span class="p">{</span> <span class="n" style="color: #333;">sig_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">outer_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">sig_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_ty</span> <span class="p">}))</span></span>
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<pre style="margin: 0;">+<span id="LC384" class="line" lang="haskell"> <span class="n" style="color: #333;">sig_ty</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSig</span> <span class="p">{</span> <span class="n" style="color: #333;">sig_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">hs_</span>outer_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">sig_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_ty</span> <span class="p">}))</span></span>
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<pre style="margin: 0;"> <span id="LC385" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addSigCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">funsSigCtxt</span> <span class="n" style="color: #333;">names</span><span class="p">)</span> <span class="n" style="color: #333;">sig_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC386" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tc_lvl</span><span class="p">,</span> <span class="n" style="color: #333;">wanted</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">imp_or_exp_tkvs</span><span class="p">,</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">))</span></span>
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<pre style="margin: 0;">-<span id="LC387" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">pushLevelAndSolveEqualitiesX</span> <span class="s" style="color: #d14;">"kcClassSigType"</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC388" class="line" lang="haskell"> <span class="n" style="color: #333;">bindOuterSigTKBndrs_Skol</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC386" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcOuterSigTKBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">hs_outer_bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC387" class="line" lang="haskell"> <span class="n" style="color: #333;">tcLHsType</span> <span class="n" style="color: #333;">hs_ty</span> <span class="n" style="color: #333;">liftedTypeKind</span></span>
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<pre style="margin: 0;">-<span id="LC390" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC391" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">spec_tkvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">either</span> <span class="n" style="color: #333;">id</span> <span class="n" style="color: #333;">binderVars</span> <span class="n" style="color: #333;">imp_or_exp_tkvs</span></span>
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<pre style="margin: 0;">-<span id="LC392" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">emitResidualTvConstraint</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">spec_tkvs</span> <span class="n" style="color: #333;">tc_lvl</span> <span class="n" style="color: #333;">wanted</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC388" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC389" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC390" class="line" lang="haskell"><span class="n" style="color: #333;">tcClassSigType</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SkolemInfo</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Located</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span></span>
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<pre style="margin: 0;"> <span id="LC391" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Does not do validity checking</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -445,30 +441,13 @@ tc_hs_sig_type :: SkolemInfo -> LHsSigType GhcRn</td>
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<pre style="margin: 0;"> <span id="LC441" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This will never emit constraints, as it uses solveEqualities internally.</span></span>
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<pre style="margin: 0;"> <span id="LC442" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- No validity checking or zonking</span></span>
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<pre style="margin: 0;"> <span id="LC443" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Returns also an implication for the unsolved constraints</span></span>
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<pre style="margin: 0;">-<span id="LC448" class="line" lang="haskell"><span class="n" style="color: #333;">tc_hs_sig_type</span> <span class="n" style="color: #333;">skol_info</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSig</span> <span class="p">{</span> <span class="n" style="color: #333;">sig_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">outer_bndrs</span></span>
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<pre style="margin: 0;">+<span id="LC444" class="line" lang="haskell"><span class="n" style="color: #333;">tc_hs_sig_type</span> <span class="n" style="color: #333;">skol_info</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="n" style="color: #333;">loc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSig</span> <span class="p">{</span> <span class="n" style="color: #333;">sig_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">hs_</span>outer_bndrs</span></span>
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<pre style="margin: 0;"> <span id="LC445" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">sig_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_ty</span> <span class="p">}))</span> <span class="n" style="color: #333;">ctxt_kind</span></span>
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<pre style="margin: 0;"> <span id="LC446" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setSrcSpan</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC451" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="c1" style="color: #998; font-style: italic;">-- When there are /explicit/ user-written binders, e.g.</span></span>
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<pre style="margin: 0;">-<span id="LC452" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- f :: forall a {k} (b::k). blah</span></span>
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<pre style="margin: 0;">-<span id="LC453" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- treat it exactly like HsForAllTy; including its own,</span></span>
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<pre style="margin: 0;">-<span id="LC454" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- individual implication constraint, so we get proper</span></span>
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<pre style="margin: 0;">-<span id="LC455" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- telescope checking.</span></span>
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<pre style="margin: 0;">-<span id="LC456" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- NB1: Do not be tempted to combine this implication constraint</span></span>
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<pre style="margin: 0;">-<span id="LC457" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- with the one from kind generalisation. That messes up the</span></span>
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<pre style="margin: 0;">-<span id="LC458" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- telescope error message, by mixing the inferred kind</span></span>
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<pre style="margin: 0;">-<span id="LC459" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- quantifiers with the explicit ones. See GHC.Tc.Types.Constraint</span></span>
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<pre style="margin: 0;">-<span id="LC460" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note [Checking telescopes], in the "don't mix up" bullet.</span></span>
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<pre style="margin: 0;">-<span id="LC461" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- NB2: There are no implicit binders (the forall-or-nothing rule),</span></span>
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<pre style="margin: 0;">-<span id="LC462" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- hence implicit_bndrs = []</span></span>
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<pre style="margin: 0;">-<span id="LC463" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">--</span></span>
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<pre style="margin: 0;">-<span id="LC464" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- When there are only /implicit/ binders, added by the renamer, e.g.</span></span>
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<pre style="margin: 0;">-<span id="LC465" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- f :: a -> t a -> t a</span></span>
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<pre style="margin: 0;">-<span id="LC466" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- then bring those implicit binders into scope here.</span></span>
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<pre style="margin: 0;">-<span id="LC467" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC468" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">tc_lvl</span><span class="p">,</span> <span class="n" style="color: #333;">wanted</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">outer_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC447" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tc_lvl</span><span class="p">,</span> <span class="n" style="color: #333;">wanted</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">outer_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC448" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">pushLevelAndSolveEqualitiesX</span> <span class="s" style="color: #d14;">"tc_hs_sig_type"</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC449" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Failure in local type signatures]</span></span>
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<pre style="margin: 0;">-<span id="LC471" class="line" lang="haskell"> <span class="n" style="color: #333;">tcOuterSigTKBndrs</span> <span class="n" style="color: #333;"><span class="idiff left">outer_bndrs</span></span><span class="idiff right"> </span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC450" class="line" lang="haskell"> <span class="n" style="color: #333;">tcOuterSigTKBndrs</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">TypeLevel</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">skol_info</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">hs_outer_bndrs</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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451
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<pre style="margin: 0;"> <span id="LC451" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">kind</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newExpectedKind</span> <span class="n" style="color: #333;">ctxt_kind</span></span>
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<pre style="margin: 0;"> <span id="LC452" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tcLHsType</span> <span class="n" style="color: #333;">hs_ty</span> <span class="n" style="color: #333;">kind</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC453" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Any remaining variables (unsolved in the solveEqualities)</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -482,8 +461,7 @@ tc_hs_sig_type skol_info (L loc (HsSig { sig_bndrs = outer_bndrs</td>
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<pre style="margin: 0;"> <span id="LC461" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC462" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Build an implication for any as-yet-unsolved kind equalities</span></span>
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<pre style="margin: 0;"> <span id="LC463" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Skolem escape in type signatures]</span></span>
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<pre style="margin: 0;">-<span id="LC485" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">skol_tvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">kvs</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">binderVars</span> <span class="n" style="color: #333;">outer_tv_bndrs</span></span>
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<pre style="margin: 0;">-<span id="LC486" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">implic</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">buildTvImplication</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">skol_tvs</span> <span class="n" style="color: #333;">tc_lvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;">+<span id="LC464" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">implic</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">buildTvImplication</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">kvs</span> <span class="n" style="color: #333;">tc_lvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;"> <span id="LC465" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC466" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">implic</span><span class="p">,</span> <span class="n" style="color: #333;">mkInfForAllTys</span> <span class="n" style="color: #333;">kvs</span> <span class="n" style="color: #333;">ty1</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC467" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -520,45 +498,45 @@ top level of a signature.</td>
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<pre style="margin: 0;"> <span id="LC498" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC499" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Does validity checking and zonking.</span></span>
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<pre style="margin: 0;"> <span id="LC500" class="line" lang="haskell"><span class="n" style="color: #333;">tcStandaloneKindSig</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LStandaloneKindSig</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Kind</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC523" class="line" lang="haskell"><span class="n" style="color: #333;">tcStandaloneKindSig</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">kisig</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">kisig</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">-<span id="LC524" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">StandaloneKindSig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="n" style="color: #333;">ksig</span> <span class="o" style="font-weight: 600;">-></span></span>
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<pre style="margin: 0;">-<span id="LC525" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StandaloneKindSigCtxt</span> <span class="n" style="color: #333;">name</span> <span class="kr" style="font-weight: 600;">in</span></span>
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<pre style="margin: 0;">-<span id="LC526" class="line" lang="haskell"> <span class="n" style="color: #333;">addSigCtxt</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">ksig</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC527" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">mode</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkMode</span> <span class="kt" style="color: #458; font-weight: 600;">KindLevel</span></span>
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<pre style="margin: 0;">-<span id="LC528" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">kind</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_top_lhs_type</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">ksig</span> <span class="p">(</span><span class="n" style="color: #333;">expectedKindInCtxt</span> <span class="n" style="color: #333;">ctxt</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC501" class="line" lang="haskell"><span class="n" style="color: #333;">tcStandaloneKindSig</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">StandaloneKindSig</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">name</span><span class="p">)</span> <span class="n" style="color: #333;">ksig</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC502" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addSigCtxt</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">ksig</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC503" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">kind</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tc_top_lhs_type</span> <span class="kt" style="color: #458; font-weight: 600;">KindLevel</span> <span class="n" style="color: #333;">ksig</span> <span class="p">(</span><span class="n" style="color: #333;">expectedKindInCtxt</span> <span class="n" style="color: #333;">ctxt</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC504" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">checkValidType</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">kind</span></span>
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<pre style="margin: 0;"> <span id="LC505" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">name</span><span class="p">,</span> <span class="n" style="color: #333;">kind</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;">-<span id="LC531" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC506" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC507" class="line" lang="haskell"> <span class="n" style="color: #333;">ctxt</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">StandaloneKindSigCtxt</span> <span class="n" style="color: #333;">name</span></span>
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<pre style="margin: 0;"> <span id="LC508" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC509" class="line" lang="haskell"><span class="n" style="color: #333;">tcTopLHsType</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ContextKind</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span></span>
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<pre style="margin: 0;"> <span id="LC510" class="line" lang="haskell"><span class="n" style="color: #333;">tcTopLHsType</span> <span class="n" style="color: #333;">lsig_ty</span> <span class="n" style="color: #333;">ctxt_kind</span></span>
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<pre style="margin: 0;">-<span id="LC535" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tc_top_lhs_type</span> <span class="p"><span class="idiff left">(</span></span><span class="n" style="color: #333;"><span class="idiff">mkMode</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">TypeLevel</span></span><span class="p"><span class="idiff right">)</span></span> <span class="n" style="color: #333;">lsig_ty</span> <span class="n" style="color: #333;">ctxt_kind</span></span>
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<pre style="margin: 0;">+<span id="LC511" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tc_top_lhs_type</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left right">TypeLevel</span></span> <span class="n" style="color: #333;">lsig_ty</span> <span class="n" style="color: #333;">ctxt_kind</span></span>
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<pre style="margin: 0;"> <span id="LC512" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC537" class="line" lang="haskell"><span class="n" style="color: #333;">tc_top_lhs_type</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">T<span class="idiff left right">cTyMode</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ContextKind</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span></span>
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<pre style="margin: 0;">+<span id="LC513" class="line" lang="haskell"><span class="n" style="color: #333;">tc_top_lhs_type</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">T<span class="idiff left right">ypeOrKind</span></span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">ContextKind</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">Type</span></span>
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<pre style="margin: 0;"> <span id="LC514" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- tc_top_lhs_type is used for kind-checking top-level LHsSigTypes where</span></span>
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515
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<pre style="margin: 0;"> <span id="LC515" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- we want to fully solve /all/ equalities, and report errors</span></span>
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<pre style="margin: 0;"> <span id="LC516" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Does zonking, but not validity checking because it's used</span></span>
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<pre style="margin: 0;"> <span id="LC517" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- for things (like deriving and instances) that aren't</span></span>
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<pre style="margin: 0;"> <span id="LC518" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- ordinary types</span></span>
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<pre style="margin: 0;"> <span id="LC519" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Used for both types and kinds</span></span>
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<pre style="margin: 0;">-<span id="LC544" class="line" lang="haskell"><span class="n" style="color: #333;">tc_top_lhs_type</span> <span class="n" style="color: #333;"><span class="idiff left">mode</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">L</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">loc</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">sig_ty</span></span><span class="o" style="font-weight: 600;"><span class="idiff">@</span></span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">HsSig</span></span><span class="idiff"> </span><span class="p"><span class="idiff">{</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">sig_bndrs</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">outer_bndrs</span></span>
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<pre style="margin: 0;">-<span id="LC545" class="line" lang="haskell"> <span class="idiff left right"> </span><span class="p">,</span> <span class="n" style="color: #333;">sig_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">body</span> <span class="p">}))</span> <span class="n" style="color: #333;">ctxt_kind</span></span>
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<pre style="margin: 0;">+<span id="LC520" class="line" lang="haskell"><span class="n" style="color: #333;">tc_top_lhs_type</span> <span class="n" style="color: #333;"><span class="idiff left">tyki</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">L</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">loc</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">sig_ty</span></span><span class="o" style="font-weight: 600;"><span class="idiff">@</span></span><span class="p"><span class="idiff">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">HsSig</span></span><span class="idiff"> </span><span class="p"><span class="idiff">{</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">sig_bndrs</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">=</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">hs_</span>outer_bndrs</span></span>
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<pre style="margin: 0;">+<span id="LC521" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">sig_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">body</span> <span class="p">}))</span> <span class="n" style="color: #333;">ctxt_kind</span></span>
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<pre style="margin: 0;"> <span id="LC522" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">setSrcSpan</span> <span class="n" style="color: #333;">loc</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC523" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tc_top_lhs_type {"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">sig_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC548" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">tclvl</span><span class="p">,</span> <span class="n" style="color: #333;">wanted</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">imp_or_exp_tkvs</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC524" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">skol_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">InstSkol</span> <span class="c1" style="color: #998; font-style: italic;">-- Why?</span></span>
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<pre style="margin: 0;">+<span id="LC525" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">tclvl</span><span class="p">,</span> <span class="n" style="color: #333;">wanted</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">outer_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">))</span></span>
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<pre style="margin: 0;"> <span id="LC526" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">pushLevelAndSolveEqualitiesX</span> <span class="s" style="color: #d14;">"tc_top_lhs_type"</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC550" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">bindOuterSigTKBndrs_Skol_M</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mode</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">outer_bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC527" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">tcOuterSigTKBndrs</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tyki</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">skol_info</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">hs_</span>outer_bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC528" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">kind</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newExpectedKind</span> <span class="n" style="color: #333;">ctxt_kind</span></span>
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<pre style="margin: 0;">-<span id="LC552" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tc_lhs_type</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">kind</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC529" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tc_lhs_type</span> <span class="p">(</span><span class="n" style="color: #333;">mkMode</span> <span class="n" style="color: #333;">tyki</span><span class="p">)</span> <span class="n" style="color: #333;">body</span> <span class="n" style="color: #333;">kind</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC530" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC531" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">outer_tv_bndrs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">scopedSortOuter</span> <span class="n" style="color: #333;">outer_bndrs</span></span>
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<pre style="margin: 0;">+<span id="LC532" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">ty1</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkInvisForAllTys</span> <span class="n" style="color: #333;">outer_tv_bndrs</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;"> <span id="LC533" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC554" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">imp_or_exp_tkvs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bitraverse</span> <span class="n" style="color: #333;">zonkAndScopedSort</span> <span class="n" style="color: #333;">pure</span> <span class="n" style="color: #333;">imp_or_exp_tkvs</span></span>
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<pre style="margin: 0;">-<span id="LC555" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">reportUnsolvedEqualities</span> <span class="kt" style="color: #458; font-weight: 600;">InstSkol</span> <span class="p">(</span><span class="n" style="color: #333;">either</span> <span class="n" style="color: #333;">id</span> <span class="n" style="color: #333;">binderVars</span> <span class="n" style="color: #333;">imp_or_exp_tkvs</span><span class="p">)</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;">-<span id="LC556" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Yuk to all this either stuff. TODO</span></span>
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<pre style="margin: 0;">-<span id="LC557" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">ty1</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">either</span> <span class="n" style="color: #333;">mkSpecForAllTys</span> <span class="n" style="color: #333;">mkInvisForAllTys</span> <span class="n" style="color: #333;">imp_or_exp_tkvs</span> <span class="n" style="color: #333;">ty</span></span>
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<pre style="margin: 0;"> <span id="LC534" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">kvs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">kindGeneralizeAll</span> <span class="n" style="color: #333;">ty1</span> <span class="c1" style="color: #998; font-style: italic;">-- "All" because it's a top-level type</span></span>
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<pre style="margin: 0;">+<span id="LC535" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">reportUnsolvedEqualities</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">kvs</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;">+<span id="LC536" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC537" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">final_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTcTypeToType</span> <span class="p">(</span><span class="n" style="color: #333;">mkInfForAllTys</span> <span class="n" style="color: #333;">kvs</span> <span class="n" style="color: #333;">ty1</span><span class="p">)</span></span>
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560
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<pre style="margin: 0;"> <span id="LC538" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tc_top_lhs_type }"</span> <span class="p">(</span><span class="n" style="color: #333;">vcat</span> <span class="p">[</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">sig_ty</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">final_ty</span><span class="p">])</span></span>
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<pre style="margin: 0;">-<span id="LC561" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">final_ty</span><span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC539" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">final_ty</span><span class="idiff left right"> </span><span class="p">}</span></span>
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540
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<pre style="margin: 0;"> <span id="LC540" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC541" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------</span></span>
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<pre style="margin: 0;"> <span id="LC542" class="line" lang="haskell"><span class="n" style="color: #333;">tcHsDeriv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TyVar</span><span class="p">],</span> <span class="kt" style="color: #458; font-weight: 600;">Class</span><span class="p">,</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">],</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Kind</span><span class="p">])</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1082,12 +1060,11 @@ tc_hs_type mode (HsOpTy _ ty1 (L _ op) ty2) exp_kind</td>
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1060
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<pre style="margin: 0;"> <span id="LC1060" class="line" lang="haskell"></span>
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1083
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1061
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<pre style="margin: 0;"> <span id="LC1061" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------- Foralls</span></span>
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1084
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1062
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<pre style="margin: 0;"> <span id="LC1062" class="line" lang="haskell"><span class="n" style="color: #333;">tc_hs_type</span> <span class="n" style="color: #333;">mode</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsForAllTy</span> <span class="p">{</span> <span class="n" style="color: #333;">hst_tele</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tele</span><span class="p">,</span> <span class="n" style="color: #333;">hst_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ty</span> <span class="p">})</span> <span class="n" style="color: #333;">exp_kind</span></span>
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1085
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<pre style="margin: 0;">-<span id="LC1085" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tv_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">ty'</span><span class="p">)</span></span>
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1086
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<pre style="margin: 0;">-<span id="LC1086" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><span class="idiff left"><-</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tcTKTelescope</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mode</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tele</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff right">$</span></span></span>
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1063
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<pre style="margin: 0;">+<span id="LC1063" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tv_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">ty'</span><span class="p">)</span><span class="idiff left"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><-</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tcTKTelescope</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mode</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">tele</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff right">$</span></span></span>
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<pre style="margin: 0;">+<span id="LC1064" class="line" lang="haskell"> <span class="idiff left"> </span><span class="n" style="color: #333;"><span class="idiff">tc_lhs_type</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mode</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ty</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">exp_kind</span></span></span>
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1087
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1065
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<pre style="margin: 0;"> <span id="LC1065" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Pass on the mode from the type, to any wildcards</span></span>
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1088
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1066
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<pre style="margin: 0;"> <span id="LC1066" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- in kind signatures on the forall'd variables</span></span>
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1089
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1067
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<pre style="margin: 0;"> <span id="LC1067" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- e.g. f :: _ -> Int -> forall (a :: _). blah</span></span>
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1090
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<pre style="margin: 0;">-<span id="LC1090" class="line" lang="haskell"> <span class="n" style="color: #333;">tc_lhs_type</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">ty</span> <span class="n" style="color: #333;">exp_kind</span></span>
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1091
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1068
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<pre style="margin: 0;"> <span id="LC1068" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Why exp_kind? See Note [Body kind of HsForAllTy]</span></span>
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1069
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<pre style="margin: 0;"> <span id="LC1069" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1070" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Do not kind-generalise here! See Note [Kind generalisation]</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -2990,57 +2967,7 @@ variable. So that's what we do.</td>
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<pre style="margin: 0;"> <span id="LC2967" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>
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<pre style="margin: 0;"> <span id="LC2968" class="line" lang="haskell"></span>
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2969
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<pre style="margin: 0;"> <span id="LC2969" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC2993" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Implicit binders</span></span>
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2994
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<pre style="margin: 0;">-<span id="LC2994" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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2995
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<pre style="margin: 0;">-<span id="LC2995" class="line" lang="haskell"></span>
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2996
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<pre style="margin: 0;">-<span id="LC2996" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrs_Skol</span><span class="p">,</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Tv</span><span class="p">,</span></span>
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2997
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<pre style="margin: 0;">-<span id="LC2997" class="line" lang="haskell"> <span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Skol</span><span class="p">,</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Tv</span></span>
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2998
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<pre style="margin: 0;">-<span id="LC2998" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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2999
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<pre style="margin: 0;">-<span id="LC2999" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Skol</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bindImplicitTKBndrsX</span> <span class="p">(</span><span class="n" style="color: #333;">newImplicitTyVarQ</span> <span class="n" style="color: #333;">newFlexiKindedSkolemTyVar</span><span class="p">)</span></span>
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3000
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<pre style="margin: 0;">-<span id="LC3000" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Tv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bindImplicitTKBndrsX</span> <span class="p">(</span><span class="n" style="color: #333;">newImplicitTyVarQ</span> <span class="n" style="color: #333;">newFlexiKindedTyVarTyVar</span><span class="p">)</span></span>
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3001
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<pre style="margin: 0;">-<span id="LC3001" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrs_Skol</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bindImplicitTKBndrsX</span> <span class="n" style="color: #333;">newFlexiKindedSkolemTyVar</span></span>
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3002
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<pre style="margin: 0;">-<span id="LC3002" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrs_Tv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bindImplicitTKBndrsX</span> <span class="n" style="color: #333;">cloneFlexiKindedTyVarTyVar</span></span>
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3003
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<pre style="margin: 0;">-<span id="LC3003" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- newFlexiKinded... see Note [Non-cloning for tyvar binders]</span></span>
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3004
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<pre style="margin: 0;">-<span id="LC3004" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- cloneFlexiKindedTyVarTyVar: see Note [Cloning for tyvar binders]</span></span>
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3005
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<pre style="margin: 0;">-<span id="LC3005" class="line" lang="haskell"></span>
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3006
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<pre style="margin: 0;">-<span id="LC3006" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrsX</span></span>
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3007
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<pre style="margin: 0;">-<span id="LC3007" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- new_tv function</span></span>
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3008
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<pre style="margin: 0;">-<span id="LC3008" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span></span>
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3009
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<pre style="margin: 0;">-<span id="LC3009" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3010
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<pre style="margin: 0;">-<span id="LC3010" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Returned [TcTyVar] are in 1-1 correspondence</span></span>
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3011
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<pre style="margin: 0;">-<span id="LC3011" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- with the passed in [Name]</span></span>
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3012
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<pre style="margin: 0;">-<span id="LC3012" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrsX</span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">tv_names</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3013
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<pre style="margin: 0;">-<span id="LC3013" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">tkvs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">tv_names</span></span>
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3014
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<pre style="margin: 0;">-<span id="LC3014" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"bindImplicitTKBndrs"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tv_names</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tkvs</span><span class="p">)</span></span>
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3015
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<pre style="margin: 0;">-<span id="LC3015" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">res</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExtendNameTyVarEnv</span> <span class="p">(</span><span class="n" style="color: #333;">tv_names</span> <span class="p">`</span><span class="n" style="color: #333;">zip</span><span class="p">`</span> <span class="n" style="color: #333;">tkvs</span><span class="p">)</span></span>
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3016
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<pre style="margin: 0;">-<span id="LC3016" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span></span>
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3017
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<pre style="margin: 0;">-<span id="LC3017" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">tkvs</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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3018
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<pre style="margin: 0;">-<span id="LC3018" class="line" lang="haskell"></span>
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3019
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<pre style="margin: 0;">-<span id="LC3019" class="line" lang="haskell"><span class="n" style="color: #333;">newImplicitTyVarQ</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span></span>
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3020
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<pre style="margin: 0;">-<span id="LC3020" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Behave like new_tv, except that if the tyvar is in scope, use it</span></span>
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3021
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<pre style="margin: 0;">-<span id="LC3021" class="line" lang="haskell"><span class="n" style="color: #333;">newImplicitTyVarQ</span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">name</span></span>
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3022
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<pre style="margin: 0;">-<span id="LC3022" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">mb_tv</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcLookupLcl_maybe</span> <span class="n" style="color: #333;">name</span></span>
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3023
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<pre style="margin: 0;">-<span id="LC3023" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">mb_tv</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3024
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<pre style="margin: 0;">-<span id="LC3024" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ATyVar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">tv</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">tv</span></span>
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3025
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<pre style="margin: 0;">-<span id="LC3025" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">name</span> <span class="p">}</span></span>
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3026
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<pre style="margin: 0;">-<span id="LC3026" class="line" lang="haskell"></span>
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3027
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<pre style="margin: 0;">-<span id="LC3027" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedTyVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Kind</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span></span>
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3028
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<pre style="margin: 0;">-<span id="LC3028" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedTyVar</span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">name</span></span>
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3029
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<pre style="margin: 0;">-<span id="LC3029" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">kind</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newMetaKindVar</span></span>
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3030
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<pre style="margin: 0;">-<span id="LC3030" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">kind</span> <span class="p">}</span></span>
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3031
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<pre style="margin: 0;">-<span id="LC3031" class="line" lang="haskell"></span>
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3032
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<pre style="margin: 0;">-<span id="LC3032" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedSkolemTyVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span></span>
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3033
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<pre style="margin: 0;">-<span id="LC3033" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedSkolemTyVar</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">newFlexiKindedTyVar</span> <span class="n" style="color: #333;">newSkolemTyVar</span></span>
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<pre style="margin: 0;">-<span id="LC3034" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC3035" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedTyVarTyVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span></span>
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<pre style="margin: 0;">-<span id="LC3036" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedTyVarTyVar</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">newFlexiKindedTyVar</span> <span class="n" style="color: #333;">newTyVarTyVar</span></span>
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<pre style="margin: 0;">-<span id="LC3037" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC3038" class="line" lang="haskell"><span class="n" style="color: #333;">cloneFlexiKindedTyVarTyVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span></span>
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3039
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<pre style="margin: 0;">-<span id="LC3039" class="line" lang="haskell"><span class="n" style="color: #333;">cloneFlexiKindedTyVarTyVar</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">newFlexiKindedTyVar</span> <span class="n" style="color: #333;">cloneTyVarTyVar</span></span>
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<pre style="margin: 0;">-<span id="LC3040" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Cloning for tyvar binders]</span></span>
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<pre style="margin: 0;">-<span id="LC3041" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC3042" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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<pre style="margin: 0;">-<span id="LC3043" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Explicit binders</span></span>
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<pre style="margin: 0;">+<span id="LC2970" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- HsForAllTelescope</span></span>
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<pre style="margin: 0;"> <span id="LC2971" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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<pre style="margin: 0;"> <span id="LC2972" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC2973" class="line" lang="haskell"><span class="n" style="color: #333;">tcTKTelescope</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyMode</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3049" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3049,20 +2976,53 @@ tcTKTelescope :: TcTyMode</td>
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<pre style="margin: 0;"> <span id="LC2976" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVarBinder</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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2977
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<pre style="margin: 0;"> <span id="LC2977" class="line" lang="haskell"><span class="n" style="color: #333;">tcTKTelescope</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">tele</span> <span class="n" style="color: #333;">thing_inside</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">tele</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3051
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2978
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<pre style="margin: 0;"> <span id="LC2978" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsForAllVis</span> <span class="p">{</span> <span class="n" style="color: #333;">hsf_vis_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bndrs</span> <span class="p">}</span></span>
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3052
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<pre style="margin: 0;">-<span id="LC3052" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">req_tv_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExplicitTKBndrs</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC2979" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">req_tv_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExplicitTKBndrs<span class="idiff left right">_M</span></span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;"> <span id="LC2980" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- req_tv_bndrs :: [VarBndr TyVar ()],</span></span>
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3054
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2981
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<pre style="margin: 0;"> <span id="LC2981" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- but we want [VarBndr TyVar ArgFlag]</span></span>
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3055
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2982
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<pre style="margin: 0;"> <span id="LC2982" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">tyVarReqToBinders</span> <span class="n" style="color: #333;">req_tv_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3056
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2983
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<pre style="margin: 0;"> <span id="LC2983" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">HsForAllInvis</span> <span class="p">{</span> <span class="n" style="color: #333;">hsf_invis_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bndrs</span> <span class="p">}</span></span>
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3057
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<td class="diff-line-num new_line old" data-linenumber="2984" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3057" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">inv_tv_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExplicitTKBndrs</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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2984
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<pre style="margin: 0;">+<span id="LC2984" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">inv_tv_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExplicitTKBndrs<span class="idiff left right">_M</span></span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3058
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2985
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<pre style="margin: 0;"> <span id="LC2985" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- inv_tv_bndrs :: [VarBndr TyVar Specificity],</span></span>
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3059
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2986
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<pre style="margin: 0;"> <span id="LC2986" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- but we want [VarBndr TyVar ArgFlag]</span></span>
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3060
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2987
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<pre style="margin: 0;"> <span id="LC2987" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">tyVarSpecToBinders</span> <span class="n" style="color: #333;">inv_tv_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3061
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2988
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<pre style="margin: 0;"> <span id="LC2988" class="line" lang="haskell"></span>
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3062
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<pre style="margin: 0;">-<span id="LC3062" class="line" lang="haskell"><span class="n" style="color: #333;">scopedSortOuter</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OuterTyVarBndrs</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">]</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcInvisTVBinder</span><span class="p">]</span></span>
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3063
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<pre style="margin: 0;">-<span id="LC3063" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcInvisTVBinder</span><span class="p">]</span></span>
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2989
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<pre style="margin: 0;">+<span id="LC2989" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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2990
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<pre style="margin: 0;">+<span id="LC2990" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- OuterTyVarBndrs</span></span>
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2991
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<pre style="margin: 0;">+<span id="LC2991" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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2992
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<pre style="margin: 0;">+<span id="LC2992" class="line" lang="haskell"></span>
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2993
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<pre style="margin: 0;">+<span id="LC2993" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kt" style="color: #458; font-weight: 600;">OuterTVBs</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">OuterTyVarBndrs</span></span>
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2994
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<pre style="margin: 0;">+<span id="LC2994" class="line" lang="haskell"> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Implicit</span></span>
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2995
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<pre style="margin: 0;">+<span id="LC2995" class="line" lang="haskell"> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcInvisTVBinder</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Explicit, with Specificity</span></span>
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2996
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<pre style="margin: 0;">+<span id="LC2996" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- OuterTVBs is what we get afeter typechecking HsOuterSigTyVarBndrs</span></span>
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2997
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<pre style="margin: 0;">+<span id="LC2997" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- with tcOuterSigTKBndrs</span></span>
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2998
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<pre style="margin: 0;">+<span id="LC2998" class="line" lang="haskell"></span>
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2999
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<pre style="margin: 0;">+<span id="LC2999" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">---------------</span></span>
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<pre style="margin: 0;">+<span id="LC3000" class="line" lang="haskell"><span class="n" style="color: #333;">fmapOuterTVBs</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">hs_imp</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="n" style="color: #333;">imp</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">))</span> <span class="c1" style="color: #998; font-style: italic;">-- Deal with implicit binders</span></span>
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3001
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<pre style="margin: 0;">+<span id="LC3001" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">hs_exp</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="n" style="color: #333;">exp</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">))</span> <span class="c1" style="color: #998; font-style: italic;">-- Deal with explicit binders</span></span>
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3002
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<pre style="margin: 0;">+<span id="LC3002" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">OuterTyVarBndrs</span> <span class="n" style="color: #333;">hs_imp</span> <span class="n" style="color: #333;">hs_exp</span></span>
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3003
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<pre style="margin: 0;">+<span id="LC3003" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3004
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<pre style="margin: 0;">+<span id="LC3004" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OuterTyVarBndrs</span> <span class="n" style="color: #333;">imp</span> <span class="n" style="color: #333;">exp</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3005
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<pre style="margin: 0;">+<span id="LC3005" class="line" lang="haskell"><span class="n" style="color: #333;">fmapOuterTVBs</span> <span class="n" style="color: #333;">do_implicit</span> <span class="n" style="color: #333;">do_explicit</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3006
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<pre style="margin: 0;">+<span id="LC3006" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3007
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<pre style="margin: 0;">+<span id="LC3007" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">imp</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">imp</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">do_implicit</span> <span class="n" style="color: #333;">imp</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3008
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<pre style="margin: 0;">+<span id="LC3008" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">imp</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3009
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<pre style="margin: 0;">+<span id="LC3009" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">exp</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">exp</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">do_explicit</span> <span class="n" style="color: #333;">exp</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3010
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<pre style="margin: 0;">+<span id="LC3010" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">exp</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3011
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<pre style="margin: 0;">+<span id="LC3011" class="line" lang="haskell"></span>
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3012
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<pre style="margin: 0;">+<span id="LC3012" class="line" lang="haskell"><span class="n" style="color: #333;">flatMapOuterTVBs</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="n" style="color: #333;">hs_imp</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="n" style="color: #333;">res</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">))</span> <span class="c1" style="color: #998; font-style: italic;">-- Deal with implicit binders</span></span>
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3013
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<pre style="margin: 0;">+<span id="LC3013" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">hs_exp</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="n" style="color: #333;">res</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">))</span> <span class="c1" style="color: #998; font-style: italic;">-- Deal with explicit binders</span></span>
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<pre style="margin: 0;">+<span id="LC3014" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">OuterTyVarBndrs</span> <span class="n" style="color: #333;">hs_imp</span> <span class="n" style="color: #333;">hs_exp</span></span>
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3015
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<pre style="margin: 0;">+<span id="LC3015" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3016
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<pre style="margin: 0;">+<span id="LC3016" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="n" style="color: #333;">res</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3017
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<pre style="margin: 0;">+<span id="LC3017" class="line" lang="haskell"><span class="n" style="color: #333;">flatMapOuterTVBs</span> <span class="n" style="color: #333;">do_implicit</span> <span class="n" style="color: #333;">do_explicit</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3018
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<pre style="margin: 0;">+<span id="LC3018" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3019
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<pre style="margin: 0;">+<span id="LC3019" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">imp</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">do_implicit</span> <span class="n" style="color: #333;">imp</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3020
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<pre style="margin: 0;">+<span id="LC3020" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">exp</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">do_explicit</span> <span class="n" style="color: #333;">exp</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3021
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<pre style="margin: 0;">+<span id="LC3021" class="line" lang="haskell"></span>
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3022
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<pre style="margin: 0;">+<span id="LC3022" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">---------------</span></span>
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3023
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<pre style="margin: 0;">+<span id="LC3023" class="line" lang="haskell"><span class="n" style="color: #333;">scopedSortOuter</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OuterTVBs</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcInvisTVBinder</span><span class="p">]</span></span>
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3064
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3024
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<pre style="margin: 0;"> <span id="LC3024" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Sort any /implicit/ binders into dependency order</span></span>
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3065
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<pre style="margin: 0;">-<span id="LC3065" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (zonking first so we can see th<span class="idiff left right">at ordre</span></span></span>
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3025
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<pre style="margin: 0;">+<span id="LC3025" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- (zonking first so we can see th<span class="idiff left right">e dependencies)</span></span></span>
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3066
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3026
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<pre style="margin: 0;"> <span id="LC3026" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- /Explicit/ ones are already in the right order</span></span>
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3067
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3027
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<pre style="margin: 0;"> <span id="LC3027" class="line" lang="haskell"><span class="n" style="color: #333;">scopedSortOuter</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">imp_tvs</span><span class="p">)</span></span>
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3068
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3028
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<pre style="margin: 0;"> <span id="LC3028" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">imp_tvs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkAndScopedSort</span> <span class="n" style="color: #333;">imp_tvs</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3071" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="3031" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3071,44 +3031,99 @@ scopedSortOuter (OuterExplicit exp_tvs)</td>
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3071
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3031
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<pre style="margin: 0;"> <span id="LC3031" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="c1" style="color: #998; font-style: italic;">-- No need to dependency-sort (or zonk) explicit quantifiers</span></span>
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3072
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3032
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<pre style="margin: 0;"> <span id="LC3032" class="line" lang="haskell"> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">exp_tvs</span></span>
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3073
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3033
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<pre style="margin: 0;"> <span id="LC3033" class="line" lang="haskell"></span>
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3074
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<pre style="margin: 0;">-<span id="LC3074" class="line" lang="haskell"><span class="n" style="color: #333;">tcOuterSigTKBndrs</span></span>
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3075
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<pre style="margin: 0;">-<span id="LC3075" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterSigTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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3076
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<pre style="margin: 0;">-<span id="LC3076" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3077
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<pre style="margin: 0;">-<span id="LC3077" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">OuterTyVarBndrs</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Implicit</span></span>
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3078
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<pre style="margin: 0;">-<span id="LC3078" class="line" lang="haskell"> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcInvisTVBinder</span><span class="p">]</span> <span class="c1" style="color: #998; font-style: italic;">-- Explicit, with Specificity</span></span>
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3079
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<pre style="margin: 0;">-<span id="LC3079" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3080
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<pre style="margin: 0;">-<span id="LC3080" class="line" lang="haskell"><span class="n" style="color: #333;">tcOuterSigTKBndrs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">implicit_nms</span><span class="p">)</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3081
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<pre style="margin: 0;">-<span id="LC3081" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="c1" style="color: #998; font-style: italic;">-- Implicit: just bind the variables; no push levels, no capturing constraints</span></span>
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3082
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<pre style="margin: 0;">-<span id="LC3082" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">imp_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Skol</span> <span class="n" style="color: #333;">implicit_nms</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3083
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<pre style="margin: 0;">-<span id="LC3083" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">imp_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3084
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<pre style="margin: 0;">-<span id="LC3084" class="line" lang="haskell"><span class="n" style="color: #333;">tcOuterSigTKBndrs</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">hs_bndrs</span><span class="p">)</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3085
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<pre style="margin: 0;">-<span id="LC3085" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="c1" style="color: #998; font-style: italic;">-- Explicit: push level, capture constraints, make implication</span></span>
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3086
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<pre style="margin: 0;">-<span id="LC3086" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExplicitTKBndrs</span> <span class="p">(</span><span class="n" style="color: #333;">mkMode</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span><span class="p">)</span> <span class="n" style="color: #333;">hs_bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3087
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<pre style="margin: 0;">-<span id="LC3087" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3034
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<pre style="margin: 0;">+<span id="LC3034" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">---------------</span></span>
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3035
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<pre style="margin: 0;">+<span id="LC3035" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterSigTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OuterTVBs</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC3036" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv_M</span> <span class="p">(</span><span class="n" style="color: #333;">mkMode</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span><span class="p">)</span></span>
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3037
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<pre style="margin: 0;">+<span id="LC3037" class="line" lang="haskell"></span>
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3038
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<pre style="margin: 0;">+<span id="LC3038" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv_M</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyMode</span></span>
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3039
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<pre style="margin: 0;">+<span id="LC3039" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterSigTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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3040
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<pre style="margin: 0;">+<span id="LC3040" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OuterTVBs</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3041
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<pre style="margin: 0;">+<span id="LC3041" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Do not push level; do not make implication constraint; use Tvs</span></span>
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3042
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<pre style="margin: 0;">+<span id="LC3042" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Two major clients of this "bind-only" path are:</span></span>
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3043
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<pre style="margin: 0;">+<span id="LC3043" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Note [Kind-checking for GADTs] in TyCl</span></span>
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3044
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<pre style="margin: 0;">+<span id="LC3044" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Note [Checking partial type signatures]</span></span>
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3045
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<pre style="margin: 0;">+<span id="LC3045" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv_M</span> <span class="n" style="color: #333;">mode</span></span>
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<pre style="margin: 0;">+<span id="LC3046" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmapOuterTVBs</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Tv</span> <span class="p">(</span><span class="n" style="color: #333;">bindExplicitTKBndrs_Tv_M</span> <span class="n" style="color: #333;">mode</span><span class="p">)</span></span>
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3047
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<pre style="margin: 0;">+<span id="LC3047" class="line" lang="haskell"></span>
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3048
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<pre style="margin: 0;">+<span id="LC3048" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Which of these do we actually need?</span></span>
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3049
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<pre style="margin: 0;">+<span id="LC3049" class="line" lang="haskell"></span>
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3050
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<pre style="margin: 0;">+<span id="LC3050" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Docs(?)</span></span>
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3051
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<pre style="margin: 0;">+<span id="LC3051" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Is the return type correct?</span></span>
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3052
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<pre style="margin: 0;">+<span id="LC3052" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Consolidate with bindHsOuter*TKBndrs_Tv?</span></span>
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3053
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<pre style="margin: 0;">+<span id="LC3053" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterFamEqnTKBndrs_Q_Skol</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ContextKind</span></span>
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3054
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<pre style="margin: 0;">+<span id="LC3054" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterFamEqnTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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3055
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<pre style="margin: 0;">+<span id="LC3055" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3056
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<pre style="margin: 0;">+<span id="LC3056" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3057
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<pre style="margin: 0;">+<span id="LC3057" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterFamEqnTKBndrs_Q_Skol</span> <span class="n" style="color: #333;">ctxt_kind</span></span>
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3058
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<pre style="margin: 0;">+<span id="LC3058" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">flatMapOuterTVBs</span> <span class="p">(</span><span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Skol</span><span class="p">)</span></span>
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3059
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<pre style="margin: 0;">+<span id="LC3059" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">bindExplicitTKBndrs_Q_Skol</span> <span class="n" style="color: #333;">ctxt_kind</span><span class="p">)</span></span>
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3060
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<pre style="margin: 0;">+<span id="LC3060" class="line" lang="haskell"></span>
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3061
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<pre style="margin: 0;">+<span id="LC3061" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Docs(?)</span></span>
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3062
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<pre style="margin: 0;">+<span id="LC3062" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Is the return type correct?</span></span>
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3063
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<pre style="margin: 0;">+<span id="LC3063" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Consolidate with bindHsOuter*TKBndrs_Tv?</span></span>
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3064
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<pre style="margin: 0;">+<span id="LC3064" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterFamEqnTKBndrs_Q_Tv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ContextKind</span></span>
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3065
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<pre style="margin: 0;">+<span id="LC3065" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterFamEqnTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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3066
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<pre style="margin: 0;">+<span id="LC3066" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3067
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<pre style="margin: 0;">+<span id="LC3067" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3068
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<pre style="margin: 0;">+<span id="LC3068" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterFamEqnTKBndrs_Q_Tv</span> <span class="n" style="color: #333;">ctxt_kind</span></span>
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<pre style="margin: 0;">+<span id="LC3069" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">flatMapOuterTVBs</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Tv</span></span>
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<pre style="margin: 0;">+<span id="LC3070" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">bindExplicitTKBndrs_Q_Tv</span> <span class="n" style="color: #333;">ctxt_kind</span><span class="p">)</span></span>
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3071
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<pre style="margin: 0;">+<span id="LC3071" class="line" lang="haskell"></span>
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3072
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<pre style="margin: 0;">+<span id="LC3072" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">---------------</span></span>
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3073
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<pre style="margin: 0;">+<span id="LC3073" class="line" lang="haskell"><span class="n" style="color: #333;">tcOuterSigTKBndrs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TypeOrKind</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">SkolemInfo</span></span>
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3074
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<pre style="margin: 0;">+<span id="LC3074" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterSigTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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3075
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<pre style="margin: 0;">+<span id="LC3075" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">OuterTVBs</span><span class="p">,</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3076
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<pre style="margin: 0;">+<span id="LC3076" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Push level, capture constraints, make implication</span></span>
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3077
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<pre style="margin: 0;">+<span id="LC3077" class="line" lang="haskell"><span class="n" style="color: #333;">tcOuterSigTKBndrs</span> <span class="n" style="color: #333;">tyki</span> <span class="n" style="color: #333;">skol_info</span></span>
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3078
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<pre style="margin: 0;">+<span id="LC3078" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fmapOuterTVBs</span> <span class="p">(</span><span class="n" style="color: #333;">tc_implicit_tk_bndrs</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Skol</span><span class="p">)</span></span>
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3079
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<pre style="margin: 0;">+<span id="LC3079" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">tcExplicitTKBndrs</span> <span class="n" style="color: #333;">tyki</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC3080" class="line" lang="haskell"></span>
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3081
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<pre style="margin: 0;">+<span id="LC3081" class="line" lang="haskell"></span>
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3082
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<pre style="margin: 0;">+<span id="LC3082" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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<pre style="margin: 0;">+<span id="LC3083" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Explicit tyvar binders</span></span>
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3084
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<pre style="margin: 0;">+<span id="LC3084" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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3088
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3085
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<pre style="margin: 0;"> <span id="LC3085" class="line" lang="haskell"></span>
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3089
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<pre style="margin: 0;"> <span id="LC3086" class="line" lang="haskell"><span class="n" style="color: #333;">tcExplicitTKBndrs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OutputableBndrFlag</span> <span class="n" style="color: #333;">flag</span></span>
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3090
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<pre style="margin: 0;">-<span id="LC3090" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">T<span class="idiff left right">cTyMode</span></span></span>
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<pre style="margin: 0;">+<span id="LC3087" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">T<span class="idiff left right">ypeOrKind</span></span></span>
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3091
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3088
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<pre style="margin: 0;"> <span id="LC3088" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsTyVarBndr</span> <span class="n" style="color: #333;">flag</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">]</span></span>
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3092
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3089
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<pre style="margin: 0;"> <span id="LC3089" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3093
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<pre style="margin: 0;"> <span id="LC3090" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">VarBndr</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span> <span class="n" style="color: #333;">flag</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC3094" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Push level, capture constraints, and emit an</span></span>
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<pre style="margin: 0;">-<span id="LC3095" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- implication constraint with a ForAllSkol ic_info, so that it</span></span>
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<pre style="margin: 0;">-<span id="LC3096" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- is subject to a telescope test.</span></span>
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<pre style="margin: 0;">-<span id="LC3097" class="line" lang="haskell"><span class="n" style="color: #333;">tcExplicitTKBndrs</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<pre style="margin: 0;">+<span id="LC3091" class="line" lang="haskell"><span class="n" style="color: #333;">tcExplicitTKBndrs</span> <span class="n" style="color: #333;">tyki</span></span>
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<pre style="margin: 0;">+<span id="LC3092" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcExplicitTKBndrs_M</span> <span class="p">(</span><span class="n" style="color: #333;">mkMode</span> <span class="n" style="color: #333;">tyki</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC3093" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC3094" class="line" lang="haskell"><span class="n" style="color: #333;">tcExplicitTKBndrs_M</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OutputableBndrFlag</span> <span class="n" style="color: #333;">flag</span></span>
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<pre style="margin: 0;">+<span id="LC3095" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">TcTyMode</span></span>
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<pre style="margin: 0;">+<span id="LC3096" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsTyVarBndr</span> <span class="n" style="color: #333;">flag</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC3097" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC3098" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">VarBndr</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span> <span class="n" style="color: #333;">flag</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC3099" class="line" lang="haskell"><span class="n" style="color: #333;">tcExplicitTKBndrs_M</span> <span class="n" style="color: #333;">mode</span></span>
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<pre style="margin: 0;">+<span id="LC3100" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tc_explicit_tk_bndrs</span> <span class="p">(</span><span class="n" style="color: #333;">bindExplicitTKBndrs_Skol_M</span> <span class="n" style="color: #333;">mode</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC3101" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC3102" class="line" lang="haskell"><span class="n" style="color: #333;">tc_explicit_tk_bndrs</span></span>
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<pre style="margin: 0;">+<span id="LC3103" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">OutputableBndrFlag</span> <span class="n" style="color: #333;">flag</span></span>
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<pre style="margin: 0;">+<span id="LC3104" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=></span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">LHsTyVarBndr</span> <span class="n" style="color: #333;">flag</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">VarBndr</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span> <span class="n" style="color: #333;">flag</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">))</span></span>
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<pre style="margin: 0;">+<span id="LC3105" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">LHsTyVarBndr</span> <span class="n" style="color: #333;">flag</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC3106" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC3107" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">VarBndr</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span> <span class="n" style="color: #333;">flag</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3108
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<pre style="margin: 0;">+<span id="LC3108" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The workhorse:</span></span>
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3109
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<pre style="margin: 0;">+<span id="LC3109" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- push level, capture constraints,</span></span>
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3110
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<pre style="margin: 0;">+<span id="LC3110" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- and emit an implication constraint with a ForAllSkol ic_info,</span></span>
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3111
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<pre style="margin: 0;">+<span id="LC3111" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- so that it is subject to a telescope test.</span></span>
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3112
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<pre style="margin: 0;">+<span id="LC3112" class="line" lang="haskell"><span class="n" style="color: #333;">tc_explicit_tk_bndrs</span> <span class="n" style="color: #333;">bind_them</span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3098
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3113
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<pre style="margin: 0;"> <span id="LC3113" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tclvl</span><span class="p">,</span> <span class="n" style="color: #333;">wanted</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">skol_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">))</span></span>
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3099
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<pre style="margin: 0;">-<span id="LC3099" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">pushLevelAndCaptureConstraints</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;">$</span></span>
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3100
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<pre style="margin: 0;">-<span id="LC3100" class="line" lang="haskell"> <span class="n" style="color: #333;">bind<span class="idiff left">ExplicitTKBndrs_Skol_M</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mode</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">bndrs</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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3114
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<pre style="margin: 0;">+<span id="LC3114" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">pushLevelAndCaptureConstraints</span> <span class="o" style="font-weight: 600;">$</span></span>
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3115
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<pre style="margin: 0;">+<span id="LC3115" class="line" lang="haskell"> <span class="n" style="color: #333;">bind<span class="idiff left">_them</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">bndrs</span></span><span class="idiff right"> </span> <span class="o" style="font-weight: 600;">$</span></span>
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3101
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3116
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<pre style="margin: 0;"> <span id="LC3116" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span></span>
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3102
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3117
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<pre style="margin: 0;"> <span id="LC3117" class="line" lang="haskell"></span>
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3103
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<pre style="margin: 0;">-<span id="LC3103" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">skol_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ForAllSkol</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">bndrs</span><span class="p">)</span></span>
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3104
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<pre style="margin: 0;">-<span id="LC3104" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">implic</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">buildTvImplication</span> <span class="n" style="color: #333;">skol_info</span> <span class="p">(</span><span class="n" style="color: #333;">binderVars</span> <span class="n" style="color: #333;">skol_tvs</span><span class="p">)</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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3105
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<pre style="margin: 0;">-<span id="LC3105" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">emitImplication</span> <span class="n" style="color: #333;">implic</span></span>
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3106
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<pre style="margin: 0;">-<span id="LC3106" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- /Always/ emit this implication even if wanted is empty</span></span>
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3107
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<pre style="margin: 0;">-<span id="LC3107" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- We need the implication so that we check for a bad telescope</span></span>
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3108
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<pre style="margin: 0;">-<span id="LC3108" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Skolem escape and forall-types]</span></span>
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3118
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<pre style="margin: 0;">+<span id="LC3118" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">skol_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">ForAllSkol</span> <span class="p">(</span><span class="n" style="color: #333;">fsep</span> <span class="p">(</span><span class="n" style="color: #333;">map</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">bndrs</span><span class="p">))</span></span>
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3119
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<pre style="margin: 0;">+<span id="LC3119" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Notice that we use ForAllSkol here, ignoring the enclosing</span></span>
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3120
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<pre style="margin: 0;">+<span id="LC3120" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- skol_info unlike tc_implicit_tk_bndrs, because the bad-telescope</span></span>
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<td class="diff-line-num new new_line" data-linenumber="3121" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
3121
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<pre style="margin: 0;">+<span id="LC3121" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- test applies only to ForAllSkol</span></span>
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3122
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<pre style="margin: 0;">+<span id="LC3122" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">emitResidualTvConstraint</span> <span class="n" style="color: #333;">skol_info</span> <span class="p">(</span><span class="n" style="color: #333;">binderVars</span> <span class="n" style="color: #333;">skol_tvs</span><span class="p">)</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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3109
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3123
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<pre style="margin: 0;"> <span id="LC3123" class="line" lang="haskell"></span>
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3110
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3124
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<pre style="margin: 0;"> <span id="LC3124" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">skol_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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3111
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3125
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<pre style="margin: 0;"> <span id="LC3125" class="line" lang="haskell"></span>
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3126
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<pre style="margin: 0;">+<span id="LC3126" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">----------------</span></span>
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3112
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3127
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<pre style="margin: 0;"> <span id="LC3127" class="line" lang="haskell"><span class="cd">-- | Skolemise the 'HsTyVarBndr's in an 'HsForAllTelescope' with the supplied</span></span>
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3113
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3128
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<pre style="margin: 0;"> <span id="LC3128" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- 'TcTyMode'.</span></span>
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3114
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3129
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<pre style="margin: 0;"> <span id="LC3129" class="line" lang="haskell"><span class="n" style="color: #333;">bindExplicitTKBndrs_Skol</span><span class="p">,</span> <span class="n" style="color: #333;">bindExplicitTKBndrs_Tv</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3174" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="diff-line-num unfold js-unfold new_line" data-linenumber="3189" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3174,97 +3189,6 @@ bindExplicitTKBndrsX tc_tv hs_tvs thing_inside</td>
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3174
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3189
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<pre style="margin: 0;"> <span id="LC3189" class="line" lang="haskell"> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">hs_tvs</span></span>
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3175
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3190
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<pre style="margin: 0;"> <span id="LC3190" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Bndr</span> <span class="n" style="color: #333;">tv</span> <span class="p">(</span><span class="n" style="color: #333;">hsTyVarBndrFlag</span> <span class="n" style="color: #333;">hs_tv</span><span class="p">)</span><span class="o" style="font-weight: 600;">:</span><span class="n" style="color: #333;">tvs</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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3176
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3191
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<pre style="margin: 0;"> <span id="LC3191" class="line" lang="haskell"></span>
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3177
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<pre style="margin: 0;">-<span id="LC3177" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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3178
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<pre style="margin: 0;">-<span id="LC3178" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Outer type variable binders</span></span>
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3179
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<pre style="margin: 0;">-<span id="LC3179" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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3180
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<pre style="margin: 0;">-<span id="LC3180" class="line" lang="haskell"></span>
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3181
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<pre style="margin: 0;">-<span id="LC3181" class="line" lang="haskell"></span>
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3182
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<pre style="margin: 0;">-<span id="LC3182" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Which of these do we actually need?</span></span>
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3183
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<pre style="margin: 0;">-<span id="LC3183" class="line" lang="haskell"></span>
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3184
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3184" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Docs(?)</span></span>
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3185
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<pre style="margin: 0;">-<span id="LC3185" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Is the return type correct?</span></span>
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3186
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<pre style="margin: 0;">-<span id="LC3186" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Consolidate with bindHsOuter*TKBndrs_Tv?</span></span>
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3187
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<pre style="margin: 0;">-<span id="LC3187" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterFamEqnTKBndrs_Q_Skol</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ContextKind</span></span>
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3188
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<pre style="margin: 0;">-<span id="LC3188" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterFamEqnTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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3189
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<pre style="margin: 0;">-<span id="LC3189" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3190
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<pre style="margin: 0;">-<span id="LC3190" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3191
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3191" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterFamEqnTKBndrs_Q_Skol</span> <span class="n" style="color: #333;">ctxt_kind</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="n" style="color: #333;">thing_inside</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3192
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<pre style="margin: 0;">-<span id="LC3192" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">implicit_tkv_nms</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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3193
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<pre style="margin: 0;">-<span id="LC3193" class="line" lang="haskell"> <span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Skol</span> <span class="n" style="color: #333;">implicit_tkv_nms</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3194
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<pre style="margin: 0;">-<span id="LC3194" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">exp_bndrs</span> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span></span>
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3195
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<pre style="margin: 0;">-<span id="LC3195" class="line" lang="haskell"> <span class="n" style="color: #333;">bindExplicitTKBndrs_Q_Skol</span> <span class="n" style="color: #333;">ctxt_kind</span> <span class="n" style="color: #333;">exp_bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3196
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<pre style="margin: 0;">-<span id="LC3196" class="line" lang="haskell"></span>
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3197
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<pre style="margin: 0;">-<span id="LC3197" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Docs(?)</span></span>
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3198
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<pre style="margin: 0;">-<span id="LC3198" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Is the return type correct?</span></span>
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3199
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<pre style="margin: 0;">-<span id="LC3199" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Consolidate with bindHsOuter*TKBndrs_Tv?</span></span>
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3200
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<pre style="margin: 0;">-<span id="LC3200" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterFamEqnTKBndrs_Q_Tv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">ContextKind</span></span>
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3201
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<pre style="margin: 0;">-<span id="LC3201" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterFamEqnTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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3202
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<pre style="margin: 0;">-<span id="LC3202" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3203
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<pre style="margin: 0;">-<span id="LC3203" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3204
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<pre style="margin: 0;">-<span id="LC3204" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterFamEqnTKBndrs_Q_Tv</span> <span class="n" style="color: #333;">ctxt_kind</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="n" style="color: #333;">thing_inside</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3205
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<pre style="margin: 0;">-<span id="LC3205" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">implicit_tkv_nms</span></span>
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3206
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<pre style="margin: 0;">-<span id="LC3206" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Tv</span> <span class="n" style="color: #333;">implicit_tkv_nms</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3207
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<pre style="margin: 0;">-<span id="LC3207" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">exp_bndrs</span></span>
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3208
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<pre style="margin: 0;">-<span id="LC3208" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">bindExplicitTKBndrs_Q_Tv</span> <span class="n" style="color: #333;">ctxt_kind</span> <span class="n" style="color: #333;">exp_bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3209
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<pre style="margin: 0;">-<span id="LC3209" class="line" lang="haskell"></span>
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3210
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<pre style="margin: 0;">-<span id="LC3210" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Docs(?)</span></span>
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3211
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<pre style="margin: 0;">-<span id="LC3211" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Is the return type correct?</span></span>
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3212
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<pre style="margin: 0;">-<span id="LC3212" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Consolidate?</span></span>
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3213
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<pre style="margin: 0;">-<span id="LC3213" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Skol</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterSigTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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3214
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<pre style="margin: 0;">-<span id="LC3214" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3215
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<pre style="margin: 0;">-<span id="LC3215" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Either</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">]</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcInvisTVBinder</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3216
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<pre style="margin: 0;">-<span id="LC3216" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Skol</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="n" style="color: #333;">thing_inside</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3217
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3217" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">implicit_tkv_nms</span></span>
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<td class="diff-line-num old old_line" data-linenumber="3218" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
3218
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<pre style="margin: 0;">-<span id="LC3218" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">imp_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Skol</span> <span class="n" style="color: #333;">implicit_tkv_nms</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<td class="diff-line-num old old_line" data-linenumber="3219" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
3219
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<pre style="margin: 0;">-<span id="LC3219" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="n" style="color: #333;">imp_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3220
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<pre style="margin: 0;">-<span id="LC3220" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">exp_bndrs</span></span>
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3221
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<pre style="margin: 0;">-<span id="LC3221" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">exp_bndrs'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bindExplicitTKBndrs_Skol</span> <span class="n" style="color: #333;">exp_bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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<td class="diff-line-num old old_line" data-linenumber="3222" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
3222
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<pre style="margin: 0;">-<span id="LC3222" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="n" style="color: #333;">exp_bndrs'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3223
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<pre style="margin: 0;">-<span id="LC3223" class="line" lang="haskell"></span>
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3224
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<pre style="margin: 0;">-<span id="LC3224" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Docs(?)</span></span>
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3225
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<pre style="margin: 0;">-<span id="LC3225" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Is the return type correct?</span></span>
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3226
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<pre style="margin: 0;">-<span id="LC3226" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Consolidate with bindHsOuter*TKBndrs_Skol?</span></span>
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3227
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<pre style="margin: 0;">-<span id="LC3227" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterSigTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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3228
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<pre style="margin: 0;">-<span id="LC3228" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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<td class="diff-line-num old old_line" data-linenumber="3229" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
3229
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<pre style="margin: 0;">-<span id="LC3229" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Either</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">]</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcInvisTVBinder</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3230
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<pre style="margin: 0;">-<span id="LC3230" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="n" style="color: #333;">thing_inside</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3231
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3231" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">implicit_tv_names</span></span>
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3232
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3232" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">imp_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Tv</span> <span class="n" style="color: #333;">implicit_tv_names</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3233
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3233" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="n" style="color: #333;">imp_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3234
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<pre style="margin: 0;">-<span id="LC3234" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">exp_bndrs</span></span>
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3235
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3235" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">exp_bndrs'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bindExplicitTKBndrs_Tv</span> <span class="n" style="color: #333;">exp_bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3236
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3236" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="n" style="color: #333;">exp_bndrs'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3237
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<pre style="margin: 0;">-<span id="LC3237" class="line" lang="haskell"></span>
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3238
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3238" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Docs(?)</span></span>
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3239
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<pre style="margin: 0;">-<span id="LC3239" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Is the return type correct?</span></span>
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3240
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<pre style="margin: 0;">-<span id="LC3240" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Consolidate?</span></span>
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3241
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<pre style="margin: 0;">-<span id="LC3241" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Skol_M</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyMode</span></span>
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3242
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<pre style="margin: 0;">-<span id="LC3242" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterSigTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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3243
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<pre style="margin: 0;">-<span id="LC3243" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3244
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<pre style="margin: 0;">-<span id="LC3244" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Either</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">]</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcInvisTVBinder</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3245
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<pre style="margin: 0;">-<span id="LC3245" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Skol_M</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="n" style="color: #333;">thing_inside</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3246
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3246" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">implicit_tkv_nms</span></span>
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3247
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3247" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">imp_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Skol</span> <span class="n" style="color: #333;">implicit_tkv_nms</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3248
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<pre style="margin: 0;">-<span id="LC3248" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="n" style="color: #333;">imp_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3249
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<pre style="margin: 0;">-<span id="LC3249" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">exp_bndrs</span></span>
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3250
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<pre style="margin: 0;">-<span id="LC3250" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">exp_bndrs'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bindExplicitTKBndrs_Skol_M</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">exp_bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3251
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3251" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="n" style="color: #333;">exp_bndrs'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3252
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3252" class="line" lang="haskell"></span>
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<td class="diff-line-num old old_line" data-linenumber="3253" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
3253
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3253" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Docs(?)</span></span>
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3254
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3254" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Is the return type correct?</span></span>
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3255
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3255" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Consolidate?</span></span>
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<td class="diff-line-num old old_line" data-linenumber="3256" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
3256
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3256" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv_M</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyMode</span></span>
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<td class="diff-line-num old old_line" data-linenumber="3257" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
3257
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3257" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsOuterSigTyVarBndrs</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span></span>
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<td class="diff-line-num old old_line" data-linenumber="3258" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
3258
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3258" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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<td class="diff-line-num old old_line" data-linenumber="3259" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
3259
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<pre style="margin: 0;">-<span id="LC3259" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcInvisTVBinder</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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<td class="diff-line-num old old_line" data-linenumber="3260" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
3260
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<pre style="margin: 0;">-<span id="LC3260" class="line" lang="haskell"><span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv_M</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="n" style="color: #333;">thing_inside</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3261
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3261" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">implicit_tkv_nms</span></span>
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<td class="diff-line-num old old_line" data-linenumber="3262" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
3262
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3262" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">imp_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Tv</span> <span class="n" style="color: #333;">implicit_tkv_nms</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3263
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<pre style="margin: 0;">-<span id="LC3263" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="n" style="color: #333;">mkTyVarBinders</span> <span class="kt" style="color: #458; font-weight: 600;">SpecifiedSpec</span> <span class="n" style="color: #333;">imp_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3264
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<pre style="margin: 0;">-<span id="LC3264" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">exp_bndrs</span></span>
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3265
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3265" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">exp_bndrs'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bindExplicitTKBndrs_Tv_M</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">exp_bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3266
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<td class="diff-line-num new_line old" data-linenumber="3192" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
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<pre style="margin: 0;">-<span id="LC3266" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">pure</span> <span class="p">(</span><span class="n" style="color: #333;">exp_bndrs'</span><span class="p">,</span> <span class="n" style="color: #333;">thing</span><span class="p">)</span> <span class="p">}</span></span>
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3267
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<pre style="margin: 0;">-<span id="LC3267" class="line" lang="haskell"></span>
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3268
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3192
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<pre style="margin: 0;"> <span id="LC3192" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-----------------</span></span>
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3269
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<td class="diff-line-num new_line" data-linenumber="3193" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
3193
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<pre style="margin: 0;"> <span id="LC3193" class="line" lang="haskell"><span class="n" style="color: #333;">tcHsTyVarBndr</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyMode</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Kind</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span><span class="p">)</span></span>
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3270
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<td class="diff-line-num new_line" data-linenumber="3194" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
3194
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<pre style="margin: 0;"> <span id="LC3194" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">HsTyVarBndr</span> <span class="n" style="color: #333;">flag</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3303,6 +3227,77 @@ tcHsQTyVarBndr _ new_tv (KindedTyVar _ _ (L _ tv_nm) lhs_kind)</td>
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3303
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3227
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<pre style="margin: 0;"> <span id="LC3227" class="line" lang="haskell"></span>
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3304
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3228
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<pre style="margin: 0;"> <span id="LC3228" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">tv_nm</span> <span class="n" style="color: #333;">kind</span> <span class="p">}</span></span>
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3305
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3229
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<pre style="margin: 0;"> <span id="LC3229" class="line" lang="haskell"></span>
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3230
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<pre style="margin: 0;">+<span id="LC3230" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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3231
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<pre style="margin: 0;">+<span id="LC3231" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Implicit tyvar binders</span></span>
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3232
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<pre style="margin: 0;">+<span id="LC3232" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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3233
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<pre style="margin: 0;">+<span id="LC3233" class="line" lang="haskell"></span>
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3234
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<pre style="margin: 0;">+<span id="LC3234" class="line" lang="haskell"><span class="n" style="color: #333;">tc_implicit_tk_bndrs</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SkolemInfo</span></span>
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3235
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<pre style="margin: 0;">+<span id="LC3235" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">))</span></span>
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3236
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<pre style="margin: 0;">+<span id="LC3236" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span></span>
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3237
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<pre style="margin: 0;">+<span id="LC3237" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3238
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<pre style="margin: 0;">+<span id="LC3238" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3239
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<pre style="margin: 0;">+<span id="LC3239" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The workhorse:</span></span>
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3240
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<pre style="margin: 0;">+<span id="LC3240" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- push level, capture constraints,</span></span>
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3241
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<pre style="margin: 0;">+<span id="LC3241" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- and emit an implication constraint with a ForAllSkol ic_info,</span></span>
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3242
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<pre style="margin: 0;">+<span id="LC3242" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- so that it is subject to a telescope test.</span></span>
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3243
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<pre style="margin: 0;">+<span id="LC3243" class="line" lang="haskell"><span class="n" style="color: #333;">tc_implicit_tk_bndrs</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">bind_them</span> <span class="n" style="color: #333;">bndrs</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3244
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<pre style="margin: 0;">+<span id="LC3244" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="p">(</span><span class="n" style="color: #333;">tclvl</span><span class="p">,</span> <span class="n" style="color: #333;">wanted</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">skol_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">))</span></span>
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3245
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<pre style="margin: 0;">+<span id="LC3245" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">pushLevelAndCaptureConstraints</span> <span class="o" style="font-weight: 600;">$</span></span>
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3246
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<pre style="margin: 0;">+<span id="LC3246" class="line" lang="haskell"> <span class="n" style="color: #333;">bind_them</span> <span class="n" style="color: #333;">bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC3247" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span></span>
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3248
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<pre style="margin: 0;">+<span id="LC3248" class="line" lang="haskell"></span>
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3249
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<pre style="margin: 0;">+<span id="LC3249" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">emitResidualTvConstraint</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">skol_tvs</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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3250
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<pre style="margin: 0;">+<span id="LC3250" class="line" lang="haskell"></span>
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3251
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<pre style="margin: 0;">+<span id="LC3251" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">skol_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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3252
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<pre style="margin: 0;">+<span id="LC3252" class="line" lang="haskell"></span>
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3253
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<pre style="margin: 0;">+<span id="LC3253" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">------------------</span></span>
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3254
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<pre style="margin: 0;">+<span id="LC3254" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrs_Skol</span><span class="p">,</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Tv</span><span class="p">,</span></span>
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3255
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<pre style="margin: 0;">+<span id="LC3255" class="line" lang="haskell"> <span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Skol</span><span class="p">,</span> <span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Tv</span></span>
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3256
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<pre style="margin: 0;">+<span id="LC3256" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>
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3257
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<pre style="margin: 0;">+<span id="LC3257" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Skol</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bindImplicitTKBndrsX</span> <span class="p">(</span><span class="n" style="color: #333;">newImplicitTyVarQ</span> <span class="n" style="color: #333;">newFlexiKindedSkolemTyVar</span><span class="p">)</span></span>
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3258
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<pre style="margin: 0;">+<span id="LC3258" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrs_Q_Tv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bindImplicitTKBndrsX</span> <span class="p">(</span><span class="n" style="color: #333;">newImplicitTyVarQ</span> <span class="n" style="color: #333;">newFlexiKindedTyVarTyVar</span><span class="p">)</span></span>
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3259
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<pre style="margin: 0;">+<span id="LC3259" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrs_Skol</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bindImplicitTKBndrsX</span> <span class="n" style="color: #333;">newFlexiKindedSkolemTyVar</span></span>
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3260
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<pre style="margin: 0;">+<span id="LC3260" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrs_Tv</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">bindImplicitTKBndrsX</span> <span class="n" style="color: #333;">cloneFlexiKindedTyVarTyVar</span></span>
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3261
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<pre style="margin: 0;">+<span id="LC3261" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- newFlexiKinded... see Note [Non-cloning for tyvar binders]</span></span>
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3262
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<pre style="margin: 0;">+<span id="LC3262" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- cloneFlexiKindedTyVarTyVar: see Note [Cloning for tyvar binders]</span></span>
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3263
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<pre style="margin: 0;">+<span id="LC3263" class="line" lang="haskell"></span>
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3264
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<pre style="margin: 0;">+<span id="LC3264" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrsX</span></span>
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3265
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<pre style="margin: 0;">+<span id="LC3265" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- new_tv function</span></span>
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3266
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<pre style="margin: 0;">+<span id="LC3266" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span></span>
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3267
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<pre style="margin: 0;">+<span id="LC3267" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="n" style="color: #333;">a</span></span>
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3268
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<pre style="margin: 0;">+<span id="LC3268" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="p">([</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">],</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="c1" style="color: #998; font-style: italic;">-- Returned [TcTyVar] are in 1-1 correspondence</span></span>
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3269
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<pre style="margin: 0;">+<span id="LC3269" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- with the passed in [Name]</span></span>
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3270
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<pre style="margin: 0;">+<span id="LC3270" class="line" lang="haskell"><span class="n" style="color: #333;">bindImplicitTKBndrsX</span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">tv_names</span> <span class="n" style="color: #333;">thing_inside</span></span>
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3271
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<pre style="margin: 0;">+<span id="LC3271" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">tkvs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">tv_names</span></span>
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3272
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<pre style="margin: 0;">+<span id="LC3272" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"bindImplicitTKBndrs"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tv_names</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tkvs</span><span class="p">)</span></span>
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3273
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<pre style="margin: 0;">+<span id="LC3273" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">res</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcExtendNameTyVarEnv</span> <span class="p">(</span><span class="n" style="color: #333;">tv_names</span> <span class="p">`</span><span class="n" style="color: #333;">zip</span><span class="p">`</span> <span class="n" style="color: #333;">tkvs</span><span class="p">)</span></span>
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3274
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<pre style="margin: 0;">+<span id="LC3274" class="line" lang="haskell"> <span class="n" style="color: #333;">thing_inside</span></span>
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3275
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<pre style="margin: 0;">+<span id="LC3275" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">tkvs</span><span class="p">,</span> <span class="n" style="color: #333;">res</span><span class="p">)</span> <span class="p">}</span></span>
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3276
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<pre style="margin: 0;">+<span id="LC3276" class="line" lang="haskell"></span>
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3277
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<pre style="margin: 0;">+<span id="LC3277" class="line" lang="haskell"><span class="n" style="color: #333;">newImplicitTyVarQ</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span></span>
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3278
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<pre style="margin: 0;">+<span id="LC3278" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Behave like new_tv, except that if the tyvar is in scope, use it</span></span>
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3279
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<pre style="margin: 0;">+<span id="LC3279" class="line" lang="haskell"><span class="n" style="color: #333;">newImplicitTyVarQ</span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">name</span></span>
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3280
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<pre style="margin: 0;">+<span id="LC3280" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">mb_tv</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcLookupLcl_maybe</span> <span class="n" style="color: #333;">name</span></span>
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3281
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<pre style="margin: 0;">+<span id="LC3281" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">mb_tv</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3282
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<pre style="margin: 0;">+<span id="LC3282" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ATyVar</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">tv</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">tv</span></span>
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3283
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<pre style="margin: 0;">+<span id="LC3283" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">name</span> <span class="p">}</span></span>
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3284
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<pre style="margin: 0;">+<span id="LC3284" class="line" lang="haskell"></span>
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3285
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<pre style="margin: 0;">+<span id="LC3285" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedTyVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Kind</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span></span>
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3286
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<pre style="margin: 0;">+<span id="LC3286" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedTyVar</span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">name</span></span>
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3287
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<pre style="margin: 0;">+<span id="LC3287" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">kind</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">newMetaKindVar</span></span>
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3288
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<pre style="margin: 0;">+<span id="LC3288" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">new_tv</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">kind</span> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC3289" class="line" lang="haskell"></span>
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3290
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<pre style="margin: 0;">+<span id="LC3290" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedSkolemTyVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span></span>
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3291
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<pre style="margin: 0;">+<span id="LC3291" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedSkolemTyVar</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">newFlexiKindedTyVar</span> <span class="n" style="color: #333;">newSkolemTyVar</span></span>
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3292
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<pre style="margin: 0;">+<span id="LC3292" class="line" lang="haskell"></span>
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3293
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<pre style="margin: 0;">+<span id="LC3293" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedTyVarTyVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span></span>
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3294
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<pre style="margin: 0;">+<span id="LC3294" class="line" lang="haskell"><span class="n" style="color: #333;">newFlexiKindedTyVarTyVar</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">newFlexiKindedTyVar</span> <span class="n" style="color: #333;">newTyVarTyVar</span></span>
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3295
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<pre style="margin: 0;">+<span id="LC3295" class="line" lang="haskell"></span>
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3296
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<pre style="margin: 0;">+<span id="LC3296" class="line" lang="haskell"><span class="n" style="color: #333;">cloneFlexiKindedTyVarTyVar</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TyVar</span></span>
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3297
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<pre style="margin: 0;">+<span id="LC3297" class="line" lang="haskell"><span class="n" style="color: #333;">cloneFlexiKindedTyVarTyVar</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">newFlexiKindedTyVar</span> <span class="n" style="color: #333;">cloneTyVarTyVar</span></span>
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3298
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<pre style="margin: 0;">+<span id="LC3298" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Cloning for tyvar binders]</span></span>
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3299
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<pre style="margin: 0;">+<span id="LC3299" class="line" lang="haskell"></span>
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3300
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<pre style="margin: 0;">+<span id="LC3300" class="line" lang="haskell"></span>
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3306
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3301
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<pre style="margin: 0;"> <span id="LC3301" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">--------------------------------------</span></span>
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3307
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3302
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<pre style="margin: 0;"> <span id="LC3302" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Binding type/class variables in the</span></span>
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3308
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3303
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<pre style="margin: 0;"> <span id="LC3303" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- kind-checking and typechecking phases</span></span>
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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3734" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">...</td>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3734,15 +3729,15 @@ tcHsPartialSigType</td>
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3734
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3729
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<pre style="margin: 0;"> <span id="LC3729" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Checking partial type signatures]</span></span>
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3735
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3730
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<pre style="margin: 0;"> <span id="LC3730" class="line" lang="haskell"><span class="n" style="color: #333;">tcHsPartialSigType</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">sig_ty</span></span>
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3736
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3731
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<pre style="margin: 0;"> <span id="LC3731" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">HsWC</span> <span class="p">{</span> <span class="n" style="color: #333;">hswc_ext</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sig_wcs</span><span class="p">,</span> <span class="n" style="color: #333;">hswc_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">sig_ty</span> <span class="p">}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sig_ty</span></span>
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3737
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<pre style="margin: 0;">-<span id="LC3737" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSig</span><span class="p">{</span><span class="n" style="color: #333;">sig_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">outer_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">sig_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">body_ty</span><span class="p">})</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sig_ty</span></span>
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3732
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<pre style="margin: 0;">+<span id="LC3732" class="line" lang="haskell"> <span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSig</span><span class="p">{</span><span class="n" style="color: #333;">sig_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">hs_</span>outer_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">sig_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">body_ty</span><span class="p">})</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">sig_ty</span></span>
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3738
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3733
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<pre style="margin: 0;"> <span id="LC3733" class="line" lang="haskell"> <span class="p">,</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">hs_ctxt</span><span class="p">,</span> <span class="n" style="color: #333;">hs_tau</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">splitLHsQualTy</span> <span class="n" style="color: #333;">body_ty</span></span>
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3739
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3734
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<pre style="margin: 0;"> <span id="LC3734" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">addSigCtxt</span> <span class="n" style="color: #333;">ctxt</span> <span class="n" style="color: #333;">sig_ty</span> <span class="o" style="font-weight: 600;">$</span></span>
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3740
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3735
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<pre style="margin: 0;"> <span id="LC3735" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">mode</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mkHoleMode</span> <span class="kt" style="color: #458; font-weight: 600;">TypeLevel</span> <span class="kt" style="color: #458; font-weight: 600;">HM_Sig</span></span>
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3741
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<pre style="margin: 0;">-<span id="LC3741" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left right">imp_or_exp_tv</span>bndrs</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">wcs</span><span class="p">,</span> <span class="n" style="color: #333;">wcx</span><span class="p">,</span> <span class="n" style="color: #333;">theta</span><span class="p">,</span> <span class="n" style="color: #333;">tau</span><span class="p">))</span></span>
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3736
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<pre style="margin: 0;">+<span id="LC3736" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;"><span class="idiff left right">outer_</span>bndrs</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">wcs</span><span class="p">,</span> <span class="n" style="color: #333;">wcx</span><span class="p">,</span> <span class="n" style="color: #333;">theta</span><span class="p">,</span> <span class="n" style="color: #333;">tau</span><span class="p">))</span></span>
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3742
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3737
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<pre style="margin: 0;"> <span id="LC3737" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">solveEqualities</span> <span class="s" style="color: #d14;">"tcHsPartialSigType"</span> <span class="o" style="font-weight: 600;">$</span></span>
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3743
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3738
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<pre style="margin: 0;"> <span id="LC3738" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Failure in local type signatures]</span></span>
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3744
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<pre style="margin: 0;">-<span id="LC3744" class="line" lang="haskell"> <span class="n" style="color: #333;">tcNamedWildCardBinders</span> <span class="n" style="color: #333;">sig_wcs</span> <span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">wcs</span> <span class="o" style="font-weight: 600;">-></span></span>
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3745
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<pre style="margin: 0;">-<span id="LC3745" class="line" lang="haskell"> <span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv_M</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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3739
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<pre style="margin: 0;">+<span id="LC3739" class="line" lang="haskell"> <span class="n" style="color: #333;">tcNamedWildCardBinders</span> <span class="n" style="color: #333;">sig_wcs</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;">$</span> <span class="nf" style="color: #900; font-weight: 600;">\</span> <span class="n" style="color: #333;">wcs</span> <span class="o" style="font-weight: 600;">-></span></span>
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3740
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<pre style="margin: 0;">+<span id="LC3740" class="line" lang="haskell"> <span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv_M</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;"><span class="idiff left right">hs_</span>outer_bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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3746
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3741
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<pre style="margin: 0;"> <span id="LC3741" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="c1" style="color: #998; font-style: italic;">-- Instantiate the type-class context; but if there</span></span>
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3747
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3742
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<pre style="margin: 0;"> <span id="LC3742" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- is an extra-constraints wildcard, just discard it here</span></span>
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3748
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3743
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<pre style="margin: 0;"> <span id="LC3743" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">theta</span><span class="p">,</span> <span class="n" style="color: #333;">wcx</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcPartialContext</span> <span class="n" style="color: #333;">mode</span> <span class="n" style="color: #333;">hs_ctxt</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3753,8 +3748,10 @@ tcHsPartialSigType ctxt sig_ty</td>
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3753
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3748
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<pre style="margin: 0;"> <span id="LC3748" class="line" lang="haskell"></span>
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3754
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3749
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<pre style="margin: 0;"> <span id="LC3749" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">wcs</span><span class="p">,</span> <span class="n" style="color: #333;">wcx</span><span class="p">,</span> <span class="n" style="color: #333;">theta</span><span class="p">,</span> <span class="n" style="color: #333;">tau</span><span class="p">)</span> <span class="p">}</span></span>
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3755
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3750
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<pre style="margin: 0;"> <span id="LC3750" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC3751" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">outer_tv_bndrs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">scopedSortOuter</span> <span class="n" style="color: #333;">outer_bndrs</span></span>
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3752
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<pre style="margin: 0;">+<span id="LC3752" class="line" lang="haskell"></span>
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3753
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<pre style="margin: 0;"> <span id="LC3753" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- No kind-generalization here:</span></span>
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3757
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<pre style="margin: 0;">-<span id="LC3757" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">kindGeneralizeNone</span> <span class="p">(</span><span class="n" style="color: #333;">mkInvisForAllTys</span> <span class="n" style="color: #333;"><span class="idiff left right">imp_or_exp_tv</span>bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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3754
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<pre style="margin: 0;">+<span id="LC3754" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">kindGeneralizeNone</span> <span class="p">(</span><span class="n" style="color: #333;">mkInvisForAllTys</span> <span class="n" style="color: #333;"><span class="idiff left right">outer_tv_</span>bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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3758
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3755
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<pre style="margin: 0;"> <span id="LC3755" class="line" lang="haskell"> <span class="n" style="color: #333;">mkPhiTy</span> <span class="n" style="color: #333;">theta</span> <span class="o" style="font-weight: 600;">$</span></span>
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3759
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3756
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<pre style="margin: 0;"> <span id="LC3756" class="line" lang="haskell"> <span class="n" style="color: #333;">tau</span><span class="p">)</span></span>
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3760
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3757
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<pre style="margin: 0;"> <span id="LC3757" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3766,17 +3763,19 @@ tcHsPartialSigType ctxt sig_ty</td>
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3766
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3763
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<pre style="margin: 0;"> <span id="LC3763" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Zonk, so that any nested foralls can "see" their occurrences</span></span>
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3767
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3764
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<pre style="margin: 0;"> <span id="LC3764" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Checking partial type signatures], and in particular</span></span>
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3768
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3765
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<pre style="margin: 0;"> <span id="LC3765" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Note [Levels for wildcards]</span></span>
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3769
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<pre style="margin: 0;">-<span id="LC3769" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;"><span class="idiff left">imp_or_exp_tvbndrs</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><-</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mapM</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">zonkInvisTVBinder</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">imp_or_exp_tv</span>bndrs</span></span>
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3770
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<pre style="margin: 0;">-<span id="LC3770" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">theta</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">zonkTcType</span> <span class="n" style="color: #333;">theta</span></span>
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3771
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<pre style="margin: 0;">-<span id="LC3771" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tau</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTcType</span> <span class="n" style="color: #333;">tau</span></span>
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<pre style="margin: 0;">+<span id="LC3766" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;"><span class="idiff left">outer_tv_bndrs</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff"><-</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mapM</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">zonkInvisTVBinder</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">outer_tv_</span>bndrs</span></span>
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3767
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<pre style="margin: 0;">+<span id="LC3767" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">theta</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="n" style="color: #333;">zonkTcType</span> <span class="n" style="color: #333;">theta</span></span>
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3768
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<pre style="margin: 0;">+<span id="LC3768" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">tau</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTcType</span> <span class="n" style="color: #333;">tau</span></span>
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3772
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3769
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<pre style="margin: 0;"> <span id="LC3769" class="line" lang="haskell"></span>
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3773
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3770
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<pre style="margin: 0;"> <span id="LC3770" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- We return a proper (Name,InvisTVBinder) environment, to be sure that</span></span>
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3774
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3771
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<pre style="margin: 0;"> <span id="LC3771" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- we bring the right name into scope in the function body.</span></span>
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3775
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3772
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<pre style="margin: 0;"> <span id="LC3772" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Test case: partial-sigs/should_compile/LocalDefinitionBug</span></span>
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3776
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<pre style="margin: 0;">-<span id="LC3776" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">imp_or_exp_hs_tvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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3777
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<pre style="margin: 0;">-<span id="LC3777" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">imp_tvs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">imp_tvs</span></span>
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3778
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<pre style="margin: 0;">-<span id="LC3778" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">exp_tvs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">hsLTyVarNames</span> <span class="n" style="color: #333;">exp_tvs</span></span>
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<pre style="margin: 0;">-<span id="LC3779" class="line" lang="haskell"> <span class="n" style="color: #333;">tv_prs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">imp_or_exp_hs_tvs</span> <span class="p">`</span><span class="n" style="color: #333;">zip</span><span class="p">`</span> <span class="n" style="color: #333;">imp_or_exp_tvbndrs</span></span>
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<pre style="margin: 0;">+<span id="LC3773" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">outer_bndr_names</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC3774" class="line" lang="haskell"> <span class="n" style="color: #333;">outer_bndr_names</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">hs_outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC3775" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">imp_tvs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">imp_tvs</span></span>
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<pre style="margin: 0;">+<span id="LC3776" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">exp_tvs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">hsLTyVarNames</span> <span class="n" style="color: #333;">exp_tvs</span></span>
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<pre style="margin: 0;">+<span id="LC3777" class="line" lang="haskell"> <span class="n" style="color: #333;">tv_prs</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[(</span><span class="kt" style="color: #458; font-weight: 600;">Name</span><span class="p">,</span><span class="kt" style="color: #458; font-weight: 600;">InvisTVBinder</span><span class="p">)]</span></span>
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<pre style="margin: 0;">+<span id="LC3778" class="line" lang="haskell"> <span class="n" style="color: #333;">tv_prs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">outer_bndr_names</span> <span class="p">`</span><span class="n" style="color: #333;">zip</span><span class="p">`</span> <span class="n" style="color: #333;">outer_tv_bndrs</span></span>
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<pre style="margin: 0;"> <span id="LC3779" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC3780" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- NB: checkValidType on the final inferred type will be</span></span>
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<pre style="margin: 0;"> <span id="LC3781" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- done later by checkInferredPolyId. We can't do it</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4186227ec3956fc99c3fd117e3659634df260808#eade747fa0a15693c67617629e286714fce958e4"><strong>compiler/GHC/Tc/Gen/Sig.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -269,10 +269,9 @@ isCompleteHsSig (HsWC { hswc_ext = wcs, hswc_body = hs_sig_ty })</td>
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<pre style="margin: 0;"> <span id="LC269" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">null</span> <span class="n" style="color: #333;">wcs</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">no_anon_wc_sig_ty</span> <span class="n" style="color: #333;">hs_sig_ty</span></span>
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<pre style="margin: 0;"> <span id="LC270" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC271" class="line" lang="haskell"><span class="n" style="color: #333;">no_anon_wc_sig_ty</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">-<span id="LC272" class="line" lang="haskell"><span class="n" style="color: #333;">no_anon_wc_sig_ty</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSig</span><span class="p">{</span><span class="n" style="color: #333;">sig_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">outer_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">sig_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">body</span><span class="p">}))</span> <span class="o" style="font-weight: 600;">=</span></span>
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<pre style="margin: 0;">-<span id="LC273" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">-<span id="LC274" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span><span class="p">{}</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">no_anon_wc_ty</span> <span class="n" style="color: #333;">body</span></span>
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<pre style="margin: 0;">-<span id="LC275" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">ltvs</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">all</span> <span class="n" style="color: #333;">no_anon_wc_tvb</span> <span class="n" style="color: #333;">ltvs</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">no_anon_wc_ty</span> <span class="n" style="color: #333;">body</span></span>
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<pre style="margin: 0;">+<span id="LC272" class="line" lang="haskell"><span class="n" style="color: #333;">no_anon_wc_sig_ty</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSig</span><span class="p">{</span><span class="n" style="color: #333;">sig_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">outer_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">sig_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">body</span><span class="p">}))</span></span>
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<pre style="margin: 0;">+<span id="LC273" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">all</span> <span class="n" style="color: #333;">no_anon_wc_tvb</span> <span class="p">(</span><span class="n" style="color: #333;">outerExplicitBndrs</span> <span class="n" style="color: #333;">outer_bndrs</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC274" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">no_anon_wc_ty</span> <span class="n" style="color: #333;">body</span></span>
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<pre style="margin: 0;"> <span id="LC275" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC276" class="line" lang="haskell"><span class="n" style="color: #333;">no_anon_wc_ty</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">LHsType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;"> <span id="LC277" class="line" lang="haskell"><span class="n" style="color: #333;">no_anon_wc_ty</span> <span class="n" style="color: #333;">lty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">lty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -385,15 +384,17 @@ completely solving them.</td>
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<pre style="margin: 0;"> <span id="LC384" class="line" lang="haskell"><span class="n" style="color: #333;">tcPatSynSig</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Name</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">LHsSigType</span> <span class="kt" style="color: #458; font-weight: 600;">GhcRn</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">TcPatSynInfo</span></span>
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<pre style="margin: 0;"> <span id="LC385" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Pattern synonym signatures]</span></span>
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<pre style="margin: 0;"> <span id="LC386" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Recipe for checking a signature] in GHC.Tc.Gen.HsType</span></span>
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<pre style="margin: 0;">-<span id="LC388" class="line" lang="haskell"><span class="n" style="color: #333;">tcPatSynSig</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">sig_ty</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSig</span><span class="p">{</span><span class="n" style="color: #333;">sig_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">outer_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">sig_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_ty</span><span class="p">}))</span></span>
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<pre style="margin: 0;">+<span id="LC387" class="line" lang="haskell"><span class="n" style="color: #333;">tcPatSynSig</span> <span class="n" style="color: #333;">name</span> <span class="n" style="color: #333;">sig_ty</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">L</span> <span class="kr" style="font-weight: 600;">_</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HsSig</span><span class="p">{</span><span class="n" style="color: #333;">sig_bndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left right">hs_</span>outer_bndrs</span><span class="p">,</span> <span class="n" style="color: #333;">sig_body</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">hs_ty</span><span class="p">}))</span></span>
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<pre style="margin: 0;"> <span id="LC388" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="p">(</span><span class="n" style="color: #333;">hs_req</span><span class="p">,</span> <span class="n" style="color: #333;">hs_ty1</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">splitLHsQualTy</span> <span class="n" style="color: #333;">hs_ty</span></span>
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<pre style="margin: 0;"> <span id="LC389" class="line" lang="haskell"> <span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">ex_hs_tvbndrs</span><span class="p">,</span> <span class="n" style="color: #333;">hs_prov</span><span class="p">,</span> <span class="n" style="color: #333;">hs_body_ty</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">splitLHsSigmaTyInvis</span> <span class="n" style="color: #333;">hs_ty1</span></span>
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<pre style="margin: 0;">-<span id="LC391" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcPatSynSig 1"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">sig_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC392" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">tclvl</span><span class="p">,</span> <span class="n" style="color: #333;">wanted</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">implicit_or_univ_tvbndrs</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">ex_tvbndrs</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">req</span><span class="p">,</span> <span class="n" style="color: #333;">prov</span><span class="p">,</span> <span class="n" style="color: #333;">body_ty</span><span class="p">))))</span></span>
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<pre style="margin: 0;">-<span id="LC393" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">pushLevelAndSolveEqualitiesX</span> <span class="s" style="color: #d14;">"tcPatSynSig"</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC390" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcPatSynSig 1"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">sig_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC391" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC392" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">skol_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">DataConSkol</span> <span class="n" style="color: #333;">name</span></span>
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<pre style="margin: 0;">+<span id="LC393" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">tclvl</span><span class="p">,</span> <span class="n" style="color: #333;">wanted</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">outer_bndrs</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">ex_tvbndrs</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">req</span><span class="p">,</span> <span class="n" style="color: #333;">prov</span><span class="p">,</span> <span class="n" style="color: #333;">body_ty</span><span class="p">))))</span></span>
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<pre style="margin: 0;">+<span id="LC394" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">pushLevelAndSolveEqualitiesX</span> <span class="s" style="color: #d14;">"tcPatSynSig"</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC395" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [solveEqualities in tcPatSynSig]</span></span>
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<pre style="margin: 0;">-<span id="LC395" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">bindOuterSigTKBndrs_Skol</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">outer_bndrs</span></span><span class="idiff right"> </span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC396" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">bindExplicitTKBndrs_Skol</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">ex_hs_tvbndrs</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC396" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">tcOuterSigTKBndrs</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">TypeLevel</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">skol_info</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff right">hs_outer_bndrs</span></span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC397" class="line" lang="haskell"> <span class="n" style="color: #333;"><span class="idiff left">tcExplicitTKBndrs</span></span><span class="idiff"> </span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff">TypeLevel</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">ex_hs_tvbndrs</span></span><span class="idiff right"> </span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC398" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">req</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcHsContext</span> <span class="n" style="color: #333;">hs_req</span></span>
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<pre style="margin: 0;"> <span id="LC399" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">prov</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcHsContext</span> <span class="n" style="color: #333;">hs_prov</span></span>
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<pre style="margin: 0;"> <span id="LC400" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">body_ty</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcHsOpenType</span> <span class="n" style="color: #333;">hs_body_ty</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -401,11 +402,13 @@ tcPatSynSig name sig_ty@(L _ (HsSig{sig_bndrs = outer_bndrs, sig_body = hs_ty}))</td>
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<pre style="margin: 0;"> <span id="LC402" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- e.g. pattern Zero <- 0# (#12094)</span></span>
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<pre style="margin: 0;"> <span id="LC403" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">req</span><span class="p">,</span> <span class="n" style="color: #333;">prov</span><span class="p">,</span> <span class="n" style="color: #333;">body_ty</span><span class="p">)</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC404" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC404" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- TODO RGS: Is this the cleanest way to do this?</span></span>
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<pre style="margin: 0;">-<span id="LC405" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="p">(</span><span class="n" style="color: #333;">implicit_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">univ_tvbndrs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">implicit_or_univ_tvbndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">-<span id="LC406" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Left</span> <span class="n" style="color: #333;">implicit_tvs'</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">implicit_tvs'</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span></span>
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407
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<pre style="margin: 0;">-<span id="LC407" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Right</span> <span class="n" style="color: #333;">univ_tvbndrs'</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">,</span> <span class="n" style="color: #333;">univ_tvbndrs'</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC405" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">implicit_tvs</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC406" class="line" lang="haskell"> <span class="n" style="color: #333;">univ_tvbndrs</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcInvisTVBinder</span><span class="p">]</span></span>
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<pre style="margin: 0;">+<span id="LC407" class="line" lang="haskell"> <span class="p">(</span><span class="n" style="color: #333;">implicit_tvs</span><span class="p">,</span> <span class="n" style="color: #333;">univ_tvbndrs</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="kr" style="font-weight: 600;">of</span></span>
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<pre style="margin: 0;">+<span id="LC408" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterImplicit</span> <span class="n" style="color: #333;">implicit_tvs</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="n" style="color: #333;">implicit_tvs</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">)</span></span>
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409
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<pre style="margin: 0;">+<span id="LC409" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">OuterExplicit</span> <span class="n" style="color: #333;">univ_tvbndrs</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">[]</span><span class="p">,</span> <span class="n" style="color: #333;">univ_tvbndrs</span><span class="p">)</span></span>
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410
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<pre style="margin: 0;"> <span id="LC410" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC411" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">implicit_tvs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkAndScopedSort</span> <span class="n" style="color: #333;">implicit_tvs</span></span>
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409
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412
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<pre style="margin: 0;"> <span id="LC412" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">ungen_patsyn_ty</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">build_patsyn_type</span> <span class="kt" style="color: #458; font-weight: 600;">[]</span> <span class="n" style="color: #333;">implicit_tvs</span> <span class="n" style="color: #333;">univ_tvbndrs</span></span>
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410
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413
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<pre style="margin: 0;"> <span id="LC413" class="line" lang="haskell"> <span class="n" style="color: #333;">req</span> <span class="n" style="color: #333;">ex_tvbndrs</span> <span class="n" style="color: #333;">prov</span> <span class="n" style="color: #333;">body_ty</span></span>
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411
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414
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<pre style="margin: 0;"> <span id="LC414" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -413,9 +416,7 @@ tcPatSynSig name sig_ty@(L _ (HsSig{sig_bndrs = outer_bndrs, sig_body = hs_ty}))</td>
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416
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<pre style="margin: 0;"> <span id="LC416" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">kvs</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">kindGeneralizeAll</span> <span class="n" style="color: #333;">ungen_patsyn_ty</span></span>
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414
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<pre style="margin: 0;"> <span id="LC417" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">traceTc</span> <span class="s" style="color: #d14;">"tcPatSynSig"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">ungen_patsyn_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;"> <span id="LC418" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC416" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">skol_tvs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">kvs</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">implicit_tvs</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">binderVars</span> <span class="p">(</span><span class="n" style="color: #333;">univ_tvbndrs</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">ex_tvbndrs</span><span class="p">)</span></span>
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<pre style="margin: 0;">-<span id="LC417" class="line" lang="haskell"> <span class="n" style="color: #333;">skol_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">DataConSkol</span> <span class="n" style="color: #333;">name</span></span>
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<pre style="margin: 0;">-<span id="LC418" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">reportUnsolvedEqualities</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">skol_tvs</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;">+<span id="LC419" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">reportUnsolvedEqualities</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">kvs</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;"> <span id="LC420" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [Report unsolved equalities in tcPatSynSig]</span></span>
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421
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<pre style="margin: 0;"> <span id="LC421" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC422" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- These are /signatures/ so we zonk to squeeze out any kind</span></span>
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<li id="54436e21ea530a66a8a71bcc01c836f4740b8f02">
<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4186227ec3956fc99c3fd117e3659634df260808#54436e21ea530a66a8a71bcc01c836f4740b8f02"><strong>compiler/GHC/Tc/Solver.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1939,7 +1939,7 @@ checkBadTelescope :: Implication -> TcS Bool</td>
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1939
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1939
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<pre style="margin: 0;"> <span id="LC1939" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Checking telescopes] in GHC.Tc.Types.Constraint</span></span>
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1940
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1940
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<pre style="margin: 0;"> <span id="LC1940" class="line" lang="haskell"><span class="n" style="color: #333;">checkBadTelescope</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Implic</span> <span class="p">{</span> <span class="n" style="color: #333;">ic_info</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">info</span></span>
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<pre style="margin: 0;"> <span id="LC1941" class="line" lang="haskell"> <span class="p">,</span> <span class="n" style="color: #333;">ic_skols</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">skols</span> <span class="p">})</span></span>
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<pre style="margin: 0;">-<span id="LC1942" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">ForAllSkol</span></span><span class="idiff"> </span><span class="p"><span class="idiff">{}</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff right"><-</span></span> <span class="n" style="color: #333;">info</span></span>
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<pre style="margin: 0;">+<span id="LC1942" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;"><span class="idiff left right">checkTelescopeSkol</span></span> <span class="n" style="color: #333;">info</span></span>
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<pre style="margin: 0;"> <span id="LC1943" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span><span class="p">{</span> <span class="n" style="color: #333;">skols</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">mapM</span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span><span class="o" style="font-weight: 600;">.</span><span class="n" style="color: #333;">zonkTyCoVarKind</span> <span class="n" style="color: #333;">skols</span></span>
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<pre style="margin: 0;"> <span id="LC1944" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">emptyVarSet</span> <span class="p">(</span><span class="n" style="color: #333;">reverse</span> <span class="n" style="color: #333;">skols</span><span class="p">))}</span></span>
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<pre style="margin: 0;"> <span id="LC1945" class="line" lang="haskell"></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4186227ec3956fc99c3fd117e3659634df260808#83d23a46bb6cdc8b1edc16f1fd2c8f5c53e2c9ca"><strong>compiler/GHC/Tc/TyCl.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1617,7 +1617,7 @@ kcConDecl new_or_data res_kind (ConDeclGADT</td>
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<pre style="margin: 0;"> <span id="LC1617" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- If we don't look at MkT we won't get the correct kind</span></span>
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<pre style="margin: 0;"> <span id="LC1618" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- for the type constructor T</span></span>
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1619
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<pre style="margin: 0;"> <span id="LC1619" class="line" lang="haskell"> <span class="n" style="color: #333;">addErrCtxt</span> <span class="p">(</span><span class="n" style="color: #333;">dataConCtxtName</span> <span class="n" style="color: #333;">names</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC1620" class="line" lang="haskell"> <span class="n" style="color: #333;">discardResult</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC1620" class="line" lang="haskell"> <span class="n" style="color: #333;">discardResult</span> <span class="idiff left right"> </span><span class="o" style="font-weight: 600;">$</span></span>
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1621
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<pre style="margin: 0;"> <span id="LC1621" class="line" lang="haskell"> <span class="n" style="color: #333;">bindOuterSigTKBndrs_Tv</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC1622" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Why "_Tv"? See Note [Kind-checking for GADTs]</span></span>
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1623
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<pre style="margin: 0;"> <span id="LC1623" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcHsMbContext</span> <span class="n" style="color: #333;">cxt</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3261,7 +3261,7 @@ tcConDecl rep_tycon tag_map tmpl_bndrs _res_kind res_tmpl new_or_data</td>
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<pre style="margin: 0;"> <span id="LC3261" class="line" lang="haskell"></span>
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3262
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<pre style="margin: 0;"> <span id="LC3262" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">tclvl</span><span class="p">,</span> <span class="n" style="color: #333;">wanted</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">outer_bndrs</span><span class="p">,</span> <span class="p">(</span><span class="n" style="color: #333;">ctxt</span><span class="p">,</span> <span class="n" style="color: #333;">arg_tys</span><span class="p">,</span> <span class="n" style="color: #333;">res_ty</span><span class="p">,</span> <span class="n" style="color: #333;">field_lbls</span><span class="p">,</span> <span class="n" style="color: #333;">stricts</span><span class="p">)))</span></span>
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<pre style="margin: 0;"> <span id="LC3263" class="line" lang="haskell"> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">pushLevelAndSolveEqualitiesX</span> <span class="s" style="color: #d14;">"tcConDecl:GADT"</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">-<span id="LC3264" class="line" lang="haskell"> <span class="n" style="color: #333;">tcOuterSigTKBndrs</span> <span class="n" style="color: #333;">outer_bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;">+<span id="LC3264" class="line" lang="haskell"> <span class="n" style="color: #333;">tcOuterSigTKBndrs</span> <span class="kt" style="color: #458; font-weight: 600;"><span class="idiff left">TypeLevel</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">skol_info</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">outer_bndrs</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC3265" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">ctxt</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcHsMbContext</span> <span class="n" style="color: #333;">cxt</span></span>
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<pre style="margin: 0;"> <span id="LC3266" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">res_ty</span><span class="p">,</span> <span class="n" style="color: #333;">res_kind</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">tcInferLHsTypeKind</span> <span class="n" style="color: #333;">hs_res_ty</span></span>
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<pre style="margin: 0;"> <span id="LC3267" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- See Note [GADT return kinds]</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -3281,11 +3281,10 @@ tcConDecl rep_tycon tag_map tmpl_bndrs _res_kind res_tmpl new_or_data</td>
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<pre style="margin: 0;"> <span id="LC3281" class="line" lang="haskell"> <span class="n" style="color: #333;">mkPhiTy</span> <span class="n" style="color: #333;">ctxt</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC3282" class="line" lang="haskell"> <span class="n" style="color: #333;">mkVisFunTys</span> <span class="n" style="color: #333;">arg_tys</span> <span class="o" style="font-weight: 600;">$</span></span>
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<pre style="margin: 0;"> <span id="LC3283" class="line" lang="haskell"> <span class="n" style="color: #333;">res_ty</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC3284" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">reportUnsolvedEqualities</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">tkvs</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;"> <span id="LC3285" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC3286" class="line" lang="haskell"> <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">tvbndrs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTyVarBinders</span> <span class="kt" style="color: #458; font-weight: 600;">InferredSpec</span> <span class="n" style="color: #333;">tkvs</span> <span class="o" style="font-weight: 600;">++</span> <span class="n" style="color: #333;">outer_tv_bndrs</span></span>
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<pre style="margin: 0;"> <span id="LC3287" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC3287" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">reportUnsolvedEqualities</span> <span class="n" style="color: #333;">skol_info</span> <span class="p">(</span><span class="n" style="color: #333;">binderVars</span> <span class="n" style="color: #333;">tvbndrs</span><span class="p">)</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;">-<span id="LC3288" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC3288" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- Zonk to Types</span></span>
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<pre style="margin: 0;"> <span id="LC3289" class="line" lang="haskell"> <span class="p">;</span> <span class="p">(</span><span class="n" style="color: #333;">ze</span><span class="p">,</span> <span class="n" style="color: #333;">tvbndrs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkTyVarBinders</span> <span class="n" style="color: #333;">tvbndrs</span></span>
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<pre style="margin: 0;"> <span id="LC3290" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">arg_tys</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">zonkScaledTcTypesToTypesX</span> <span class="n" style="color: #333;">ze</span> <span class="n" style="color: #333;">arg_tys</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4186227ec3956fc99c3fd117e3659634df260808#3b6d78a50c8462304f843b952a88e531718dbbd2"><strong>compiler/GHC/Tc/Types/Constraint.hs</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -35,7 +35,7 @@ module GHC.Tc.Types.Constraint (</td>
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<pre style="margin: 0;"> <span id="LC35" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">isDroppableCt</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">insolubleImplic</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">arisesFromGivens</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC38" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Implication</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">implicationPrototype</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC38" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">Implication</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">implicationPrototype</span><span class="p">,</span><span class="idiff left"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">checkTelescopeSkol</span></span><span class="p"><span class="idiff right">,</span></span></span>
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<pre style="margin: 0;"> <span id="LC39" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">ImplicStatus</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">),</span> <span class="nf" style="color: #900; font-weight: 600;">isInsolubleStatus</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isSolvedStatus</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC40" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">SubGoalDepth</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">initialSubGoalDepth</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">maxSubGoalDepth</span><span class="p">,</span></span>
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<pre style="margin: 0;"> <span id="LC41" class="line" lang="haskell"> <span class="nf" style="color: #900; font-weight: 600;">bumpSubGoalDepth</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">subGoalDepthExceeded</span><span class="p">,</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1176,8 +1176,8 @@ data ImplicStatus</td>
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<pre style="margin: 0;"> <span id="LC1176" class="line" lang="haskell"></span>
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1177
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<pre style="margin: 0;"> <span id="LC1177" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">IC_Insoluble</span> <span class="c1" style="color: #998; font-style: italic;">-- At least one insoluble constraint in the tree</span></span>
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1178
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<pre style="margin: 0;"> <span id="LC1178" class="line" lang="haskell"></span>
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1179
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<pre style="margin: 0;">-<span id="LC1179" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">IC_BadTelescope</span> <span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">s</span>olved, but the skolems in the telescope are out of</span></span>
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1180
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<pre style="margin: 0;">-<span id="LC1180" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- dependency order</span></span>
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<pre style="margin: 0;">+<span id="LC1179" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">IC_BadTelescope</span> <span class="c1" style="color: #998; font-style: italic;">-- <span class="idiff left right">S</span>olved, but the skolems in the telescope are out of</span></span>
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<pre style="margin: 0;">+<span id="LC1180" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- dependency order<span class="idiff left right">. See Note [Checking telescopes]</span></span></span>
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<pre style="margin: 0;"> <span id="LC1181" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1182" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">IC_Unsolved</span> <span class="c1" style="color: #998; font-style: italic;">-- Neither of the above; might go either way</span></span>
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<pre style="margin: 0;"> <span id="LC1183" class="line" lang="haskell"></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -1207,6 +1207,11 @@ instance Outputable ImplicStatus where</td>
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<pre style="margin: 0;"> <span id="LC1207" class="line" lang="haskell"> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">IC_Solved</span> <span class="p">{</span> <span class="n" style="color: #333;">ics_dead</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">dead</span> <span class="p">})</span></span>
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<pre style="margin: 0;"> <span id="LC1208" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Solved"</span> <span class="o" style="font-weight: 600;"><+></span> <span class="p">(</span><span class="n" style="color: #333;">braces</span> <span class="p">(</span><span class="n" style="color: #333;">text</span> <span class="s" style="color: #d14;">"Dead givens ="</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">dead</span><span class="p">))</span></span>
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1209
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<pre style="margin: 0;"> <span id="LC1209" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC1210" class="line" lang="haskell"><span class="n" style="color: #333;">checkTelescopeSkol</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SkolemInfo</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Bool</span></span>
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<pre style="margin: 0;">+<span id="LC1211" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See Note [Checking telescopes]</span></span>
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<pre style="margin: 0;">+<span id="LC1212" class="line" lang="haskell"><span class="n" style="color: #333;">checkTelescopeSkol</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">ForAllSkol</span> <span class="p">{})</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">True</span></span>
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<pre style="margin: 0;">+<span id="LC1213" class="line" lang="haskell"><span class="n" style="color: #333;">checkTelescopeSkol</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">False</span></span>
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<pre style="margin: 0;">+<span id="LC1214" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC1215" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [Checking telescopes]</span></span>
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<pre style="margin: 0;"> <span id="LC1216" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>
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<pre style="margin: 0;"> <span id="LC1217" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">When kind-checking a /user-written/ type, we might have a "bad telescope"</span></span>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -926,13 +926,18 @@ checkTvConstraints skol_info skol_tvs thing_inside</td>
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<pre style="margin: 0;"> <span id="LC926" class="line" lang="haskell"><span class="n" style="color: #333;">emitResidualTvConstraint</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SkolemInfo</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">]</span></span>
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<pre style="margin: 0;"> <span id="LC927" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcLevel</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">WantedConstraints</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;"> <span id="LC928" class="line" lang="haskell"><span class="n" style="color: #333;">emitResidualTvConstraint</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">skol_tvs</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;">-<span id="LC929" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">isEmptyWC</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;">-<span id="LC930" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">-<span id="LC931" class="line" lang="haskell"></span>
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<pre style="margin: 0;">-<span id="LC932" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span></span>
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<pre style="margin: 0;">-<span id="LC933" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">implic</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">buildTvImplication</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">skol_tvs</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;">+<span id="LC929" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">not</span> <span class="p">(</span><span class="n" style="color: #333;">isEmptyWC</span> <span class="n" style="color: #333;">wanted</span><span class="p">)</span> <span class="o" style="font-weight: 600;">||</span></span>
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<pre style="margin: 0;">+<span id="LC930" class="line" lang="haskell"> <span class="n" style="color: #333;">checkTelescopeSkol</span> <span class="n" style="color: #333;">skol_info</span></span>
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<pre style="margin: 0;">+<span id="LC931" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="c1" style="color: #998; font-style: italic;">-- checkTelescopeSkol: in this case, /always/ emit this implication</span></span>
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<pre style="margin: 0;">+<span id="LC932" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- even if 'wanted' is empty. We need the implication so that we check</span></span>
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<pre style="margin: 0;">+<span id="LC933" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- for a bad telescope. See Note [Skolem escape and forall-types] in</span></span>
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<pre style="margin: 0;">+<span id="LC934" class="line" lang="haskell"> <span class="c1" style="color: #998; font-style: italic;">-- GHC.Tc.Gen.HsType</span></span>
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<pre style="margin: 0;">+<span id="LC935" class="line" lang="haskell"> <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">implic</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">buildTvImplication</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">skol_tvs</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<pre style="margin: 0;"> <span id="LC936" class="line" lang="haskell"> <span class="p">;</span> <span class="n" style="color: #333;">emitImplication</span> <span class="n" style="color: #333;">implic</span> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC937" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC938" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="c1" style="color: #998; font-style: italic;">-- Empty 'wanted', emit nothing</span></span>
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<pre style="margin: 0;">+<span id="LC939" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="nb" style="color: #0086b3;">()</span></span>
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<pre style="margin: 0;">+<span id="LC940" class="line" lang="haskell"></span>
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<pre style="margin: 0;"> <span id="LC941" class="line" lang="haskell"><span class="n" style="color: #333;">buildTvImplication</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">SkolemInfo</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcTyVar</span><span class="p">]</span></span>
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<pre style="margin: 0;"> <span id="LC942" class="line" lang="haskell"> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcLevel</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">WantedConstraints</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcM</span> <span class="kt" style="color: #458; font-weight: 600;">Implication</span></span>
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<pre style="margin: 0;"> <span id="LC943" class="line" lang="haskell"><span class="n" style="color: #333;">buildTvImplication</span> <span class="n" style="color: #333;">skol_info</span> <span class="n" style="color: #333;">skol_tvs</span> <span class="n" style="color: #333;">tclvl</span> <span class="n" style="color: #333;">wanted</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4186227ec3956fc99c3fd117e3659634df260808#04a77352fb354d4e0af3cf974e30314c29b0f708"><strong>testsuite/tests/polykinds/T16762.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE GADTs, DataKinds, PolyKinds, ExplicitForAll #-}</span></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">BadTelescope2</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Kind</span></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">SameKind</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="o" style="font-weight: 600;">*</span></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This declaration made GHC 8.10 produce a Core Lint error</span></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">T</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"> <span class="kt" style="color: #458; font-weight: 600;">MkT</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">kx</span> <span class="p">(</span><span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">kx</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">SameKind</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">T</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span></span>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4186227ec3956fc99c3fd117e3659634df260808#67ad25de041b898e7dd11e8544f65f686e3b6168"><strong>testsuite/tests/polykinds/T16762a.hs</strong></a>
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<pre style="margin: 0;">+<span id="LC1" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# LANGUAGE TypeFamilies, GADTs, DataKinds, PolyKinds, ExplicitForAll #-}</span></span>
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<pre style="margin: 0;">+<span id="LC2" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC3" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">module</span> <span class="nn" style="color: #555;">T16762a</span> <span class="kr" style="font-weight: 600;">where</span></span>
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<pre style="margin: 0;">+<span id="LC4" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC5" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Kind</span></span>
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<pre style="margin: 0;">+<span id="LC6" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC7" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">data</span> <span class="kt" style="color: #458; font-weight: 600;">SameKind</span> <span class="o" style="font-weight: 600;">::</span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">k</span> <span class="o" style="font-weight: 600;">-></span> <span class="o" style="font-weight: 600;">*</span></span>
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<pre style="margin: 0;">+<span id="LC8" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC9" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="n" style="color: #333;">family</span> <span class="kt" style="color: #458; font-weight: 600;">F</span> <span class="n" style="color: #333;">a</span></span>
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<pre style="margin: 0;">+<span id="LC10" class="line" lang="haskell"></span>
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<pre style="margin: 0;">+<span id="LC11" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- This should jolly well be rejected!</span></span>
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12
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<pre style="margin: 0;">+<span id="LC12" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">type</span> <span class="kr" style="font-weight: 600;">instance</span> <span class="n" style="color: #333;">forall</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">k</span> <span class="p">(</span><span class="n" style="color: #333;">b</span><span class="o" style="font-weight: 600;">::</span><span class="n" style="color: #333;">k</span><span class="p">)</span><span class="o" style="font-weight: 600;">.</span> <span class="kt" style="color: #458; font-weight: 600;">F</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">SameKind</span> <span class="n" style="color: #333;">a</span> <span class="n" style="color: #333;">b</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Int</span></span>
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<pre style="margin: 0;">+<span id="LC13" class="line" lang="haskell"></span></pre>
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<a href="https://gitlab.haskell.org/ghc/ghc/-/commit/4186227ec3956fc99c3fd117e3659634df260808#37bb83d0a916288b2296ba25cdbbef228eed6484"><strong>testsuite/tests/polykinds/all.T</strong></a>
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<td class="line_content match " style="padding-left: 0.5em; padding-right: 0.5em; color: rgba(0,0,0,0.3);" bgcolor="#fafafa">@@ -225,3 +225,5 @@ test('T18451', normal, compile_fail, [''])</td>
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<pre style="margin: 0;"> <span id="LC225" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18451a</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;"> <span id="LC226" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18451b</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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227
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<pre style="margin: 0;"> <span id="LC227" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T18522-ppr</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">ghci_script</span><span class="p">,</span> <span class="p">['</span><span class="s1" style="color: #d14;">T18522-ppr.script</span><span class="p">'])</span></span>
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<pre style="margin: 0;">+<span id="LC228" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16762</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span>
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<pre style="margin: 0;">+<span id="LC229" class="line" lang="perl"><span class="nv" style="color: #008080;">test</span><span class="p">('</span><span class="s1" style="color: #d14;">T16762a</span><span class="p">',</span> <span class="nv" style="color: #008080;">normal</span><span class="p">,</span> <span class="nv" style="color: #008080;">compile_fail</span><span class="p">,</span> <span class="p">[''])</span></span></pre>
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