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GitLab

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<h3>

Richard Eisenberg pushed to branch wip/cfuneqcan-refactor

at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>

</h3>

<h4>

Commits:

</h4>

<ul>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/81480c418ff4c1ad95f832755ee6324bc8671ed5">81480c41</a></strong>

<div>

<span>by Richard Eisenberg</span>

<i>at 2020-11-09T14:23:08-05:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Fix error output

</pre>

</li>

<li>

<strong><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/6a4ca962c448cba22b2a3f6c870a769f254f9ce1">6a4ca962</a></strong>

<div>

<span>by Richard Eisenberg</span>

<i>at 2020-11-10T09:54:32-05:00</i>

</div>

<pre class="commit-message" style="white-space: pre-wrap; margin: 0;">Reimplement flatten_exact_fam_app

Hopefully will be faster?

</pre>

</li>

</ul>

<h4>5 changed files:</h4>

<ul>

<li class="file-stats">

<a href="#f4ae6618b39d5ee4af8302b821aa7e38097a84b7">

compiler/GHC/Data/Maybe.hs

</a>

</li>

<li class="file-stats">

<a href="#81707f1fe21087531cefd70879aa09c2be5c1d22">

compiler/GHC/Tc/Solver/Flatten.hs

</a>

</li>

<li class="file-stats">

<a href="#0c6b585a8a21f8340a85ca2cef89c4b1bf5a8953">

compiler/GHC/Tc/Solver/Monad.hs

</a>

</li>

<li class="file-stats">

<a href="#31dd222895d4f077f4769c6b6b7302983c4402e7">

testsuite/tests/patsyn/should_fail/T11010.stderr

</a>

</li>

<li class="file-stats">

<a href="#abbf4fb3aa1f761971354189e6537b8113d2e6ce">

testsuite/tests/roles/should_compile/Roles3.stderr

</a>

</li>

</ul>

<h4>Changes:</h4>

<li id="f4ae6618b39d5ee4af8302b821aa7e38097a84b7">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/a97a29b2f471d15fbfbc6572debdbde4c056e637...6a4ca962c448cba22b2a3f6c870a769f254f9ce1#f4ae6618b39d5ee4af8302b821aa7e38097a84b7"><strong>compiler/GHC/Data/Maybe.hs</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="16" 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="16" 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">@@ -16,7 +16,7 @@ module GHC.Data.Maybe (</td>

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<td class="diff-line-num old_line" data-linenumber="16" 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">

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<pre style="margin: 0;"> <span id="LC16" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">failME</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">isSuccess</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="17" 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">

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<pre style="margin: 0;"> <span id="LC17" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="18" 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">

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<td class="diff-line-num new_line" data-linenumber="18" 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">

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<pre style="margin: 0;"> <span id="LC18" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">orElse</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="19" 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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<td class="diff-line-num new_line old" data-linenumber="19" 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="LC19" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">firstJust</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">firstJusts</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="20" 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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<td class="diff-line-num new new_line" data-linenumber="19" 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="LC19" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">firstJust</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">firstJusts</span><span class="p">,</span><span class="idiff left"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff">firstJustsM</span></span><span class="p"><span class="idiff right">,</span></span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="20" 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">

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<pre style="margin: 0;"> <span id="LC20" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">whenIsJust</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="21" 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">

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<td class="diff-line-num new_line" data-linenumber="21" 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">

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<pre style="margin: 0;"> <span id="LC21" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">expectJust</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="22" 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">

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<td class="diff-line-num new_line" data-linenumber="22" 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">

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<pre style="margin: 0;"> <span id="LC22" class="line" lang="haskell">        <span class="nf" style="color: #900; font-weight: 600;">rightToMaybe</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="31" 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="31" 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">@@ -31,6 +31,7 @@ import Control.Monad</td>

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<pre style="margin: 0;"> <span id="LC31" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Monad.Trans.Maybe</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="32" 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">

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<pre style="margin: 0;"> <span id="LC32" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Exception</span> <span class="p">(</span><span class="nf" style="color: #900; font-weight: 600;">catch</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">SomeException</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">))</span></span>

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<td class="diff-line-num old_line" data-linenumber="33" 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">

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<td class="diff-line-num new_line" data-linenumber="33" 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">

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<pre style="margin: 0;"> <span id="LC33" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Maybe</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.Foldable</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">foldlM</span> <span class="p">)</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="34" 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">

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<pre style="margin: 0;"> <span id="LC35" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Misc</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">HasCallStack</span><span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC36" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">infixr</span> <span class="mi" style="color: #099;">4</span> <span class="p">`</span><span class="n" style="color: #333;">orElse</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">@@ -51,6 +52,15 @@ firstJust a b = firstJusts [a, b]</td>

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<pre style="margin: 0;"> <span id="LC52" class="line" lang="haskell"><span class="n" style="color: #333;">firstJusts</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;"> <span id="LC53" class="line" lang="haskell"><span class="n" style="color: #333;">firstJusts</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">msum</span></span>

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<pre style="margin: 0;"> <span id="LC54" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC55" class="line" lang="haskell"><span class="cd">-- | Takes computations returnings @Maybes@; tries each one in order.</span></span>

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<pre style="margin: 0;">+<span id="LC56" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- The first one to return a @Just@ wins. Returns @Nothing@ if all computations</span></span>

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<pre style="margin: 0;">+<span id="LC57" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- return @Nothing@.</span></span>

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<pre style="margin: 0;">+<span id="LC58" class="line" lang="haskell"><span class="n" style="color: #333;">firstJustsM</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Monad</span> <span class="n" style="color: #333;">m</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Foldable</span> <span class="n" style="color: #333;">f</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=></span> <span class="n" style="color: #333;">f</span> <span class="p">(</span><span class="n" style="color: #333;">m</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="p">))</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC59" class="line" lang="haskell"><span class="n" style="color: #333;">firstJustsM</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">foldlM</span> <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="kr" style="font-weight: 600;">where</span></span>

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<pre style="margin: 0;">+<span id="LC60" class="line" lang="haskell">  <span class="n" style="color: #333;">go</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Monad</span> <span class="n" style="color: #333;">m</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">m</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span><span class="p">)</span></span>

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<pre style="margin: 0;">+<span id="LC61" class="line" lang="haskell">  <span class="n" style="color: #333;">go</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span>         <span class="n" style="color: #333;">action</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">action</span></span>

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<pre style="margin: 0;">+<span id="LC62" class="line" lang="haskell">  <span class="n" style="color: #333;">go</span> <span class="n" style="color: #333;">result</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">)</span> <span class="n" style="color: #333;">_action</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="n" style="color: #333;">result</span></span>

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<pre style="margin: 0;">+<span id="LC63" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC64" class="line" lang="haskell"><span class="n" style="color: #333;">expectJust</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">HasCallStack</span> <span class="o" style="font-weight: 600;">=></span> <span class="kt" style="color: #458; font-weight: 600;">String</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="n" style="color: #333;">a</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">a</span></span>

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<pre style="margin: 0;"> <span id="LC65" class="line" lang="haskell"><span class="cp" style="color: #999; font-weight: 600;">{-# INLINE expectJust #-}</span></span>

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<pre style="margin: 0;"> <span id="LC66" class="line" lang="haskell"><span class="n" style="color: #333;">expectJust</span> <span class="kr" style="font-weight: 600;">_</span>   <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="n" style="color: #333;">x</span><span class="p">)</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">x</span></span>

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<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/a97a29b2f471d15fbfbc6572debdbde4c056e637...6a4ca962c448cba22b2a3f6c870a769f254f9ce1#81707f1fe21087531cefd70879aa09c2be5c1d22"><strong>compiler/GHC/Tc/Solver/Flatten.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">@@ -31,6 +31,7 @@ import GHC.Utils.Panic</td>

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<pre style="margin: 0;"> <span id="LC31" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Tc.Solver.Monad</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">TcS</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="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Misc</span></span>

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<pre style="margin: 0;">+<span id="LC34" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Maybe</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC35" 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="LC36" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Utils.Monad</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">zipWith3M</span> <span class="p">)</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC37" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List.NonEmpty</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">NonEmpty</span><span class="p">(</span><span class="o" style="font-weight: 600;">..</span><span class="p">)</span> <span class="p">)</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="748" 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="749" 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">@@ -748,7 +749,6 @@ so those families can get reduced.</td>

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<pre style="margin: 0;"> <span id="LC749" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC750" class="line" lang="haskell"><span class="n" style="color: #333;">flatten_fam_app</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Xi</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Coercion</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC751" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">--   flatten_fam_app            can be over-saturated</span></span>

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<pre style="margin: 0;">-<span id="LC751" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">--   flatten_exact_fam_app       is exactly saturated</span></span>

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<pre style="margin: 0;"> <span id="LC752" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">--   flatten_exact_fam_app_fully lifts out the application to top level</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC753" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- Postcondition: Coercion :: Xi ~ F tys</span></span>

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<pre style="margin: 0;"> <span id="LC754" class="line" lang="haskell"><span class="n" style="color: #333;">flatten_fam_app</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span>  <span class="c1" style="color: #998; font-style: italic;">-- Can be over-saturated</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="769" 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="769" 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">@@ -769,6 +769,92 @@ flatten_fam_app tc tys  -- Can be over-saturated</td>

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<pre style="margin: 0;"> <span id="LC769" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- See note [flatten_exact_fam_app_fully performance]</span></span>

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<pre style="margin: 0;"> <span id="LC770" class="line" lang="haskell"><span class="n" style="color: #333;">flatten_exact_fam_app_fully</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Xi</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Coercion</span><span class="p">)</span></span>

</pre>

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771

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771

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<pre style="margin: 0;"> <span id="LC771" class="line" lang="haskell"><span class="n" style="color: #333;">flatten_exact_fam_app_fully</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span></span>

</pre>

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772

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<pre style="margin: 0;">+<span id="LC772" 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;">checkStackDepth</span> <span class="p">(</span><span class="n" style="color: #333;">mkTyConApp</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span><span class="p">)</span></span>

</pre>

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773

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<pre style="margin: 0;">+<span id="LC773" class="line" lang="haskell"></span>

</pre>

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774

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<pre style="margin: 0;">+<span id="LC774" class="line" lang="haskell">       <span class="c1" style="color: #998; font-style: italic;">-- Step 1. Try to reduce without reducing arguments first.</span></span>

</pre>

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775

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<pre style="margin: 0;">+<span id="LC775" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">result1</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">try_to_reduce</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span></span>

</pre>

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776

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<pre style="margin: 0;">+<span id="LC776" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">result1</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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777

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<pre style="margin: 0;">+<span id="LC777" class="line" lang="haskell">         <span class="p">{</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">xi</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">finish</span> <span class="p">(</span><span class="n" style="color: #333;">xi</span><span class="p">,</span> <span class="n" style="color: #333;">co</span><span class="p">)</span></span>

</pre>

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778

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<pre style="margin: 0;">+<span id="LC778" class="line" lang="haskell">         <span class="p">;</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">-></span></span>

</pre>

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779

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<pre style="margin: 0;">+<span id="LC779" class="line" lang="haskell"></span>

</pre>

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780

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<pre style="margin: 0;">+<span id="LC780" class="line" lang="haskell">        <span class="c1" style="color: #998; font-style: italic;">-- That didn't work. So reduce the arguments.</span></span>

</pre>

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781

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<pre style="margin: 0;">+<span id="LC781" 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;">xis</span><span class="p">,</span> <span class="n" style="color: #333;">cos</span><span class="p">,</span> <span class="n" style="color: #333;">kind_co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">flatten_args_tc</span> <span class="n" style="color: #333;">tc</span> <span class="p">(</span><span class="n" style="color: #333;">repeat</span> <span class="kt" style="color: #458; font-weight: 600;">Nominal</span><span class="p">)</span> <span class="n" style="color: #333;">tys</span></span>

</pre>

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782

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<pre style="margin: 0;">+<span id="LC782" class="line" lang="haskell">           <span class="c1" style="color: #998; font-style: italic;">-- kind_co :: tcTypeKind(F xis) ~N tcTypeKind(F tys)</span></span>

</pre>

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783

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<pre style="margin: 0;">+<span id="LC783" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="784" 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">

784

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<pre style="margin: 0;">+<span id="LC784" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">eq_rel</span>  <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getEqRel</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="785" 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">

785

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<pre style="margin: 0;">+<span id="LC785" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">role</span>    <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">eqRelRole</span> <span class="n" style="color: #333;">eq_rel</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="786" 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">

786

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<pre style="margin: 0;">+<span id="LC786" class="line" lang="haskell">             <span class="n" style="color: #333;">args_co</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTyConAppCo</span> <span class="n" style="color: #333;">role</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">cos</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="787" 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">

787

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<pre style="margin: 0;">+<span id="LC787" class="line" lang="haskell">           <span class="c1" style="color: #998; font-style: italic;">-- args_co :: F xis ~r F tys</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="788" 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">

788

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<pre style="margin: 0;">+<span id="LC788" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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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<td class="diff-line-num new new_line" data-linenumber="789" 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">

789

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<pre style="margin: 0;">+<span id="LC789" class="line" lang="haskell">             <span class="n" style="color: #333;">homogenise</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="790" 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">

790

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<pre style="margin: 0;">+<span id="LC790" class="line" lang="haskell">               <span class="c1" style="color: #998; font-style: italic;">-- in (xi', co') = homogenise xi co</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="791" 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">

791

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<pre style="margin: 0;">+<span id="LC791" class="line" lang="haskell">               <span class="c1" style="color: #998; font-style: italic;">--   assume co :: xi ~r F xis, co is homogeneous</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="792" 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">

792

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<pre style="margin: 0;">+<span id="LC792" class="line" lang="haskell">               <span class="c1" style="color: #998; font-style: italic;">--   then xi' :: tcTypeKind(F tys)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="793" 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">

793

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<pre style="margin: 0;">+<span id="LC793" class="line" lang="haskell">               <span class="c1" style="color: #998; font-style: italic;">--   and co' :: xi' ~r F tys, which is homogeneous</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="794" 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">

794

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<pre style="margin: 0;">+<span id="LC794" class="line" lang="haskell">             <span class="n" style="color: #333;">homogenise</span> <span class="n" style="color: #333;">xi</span> <span class="n" style="color: #333;">co</span> <span class="o" style="font-weight: 600;">=</span> <span class="p">(</span><span class="n" style="color: #333;">casted_xi</span><span class="p">,</span> <span class="n" style="color: #333;">final_co</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="795" 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">

795

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<pre style="margin: 0;">+<span id="LC795" class="line" lang="haskell">               <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="796" 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">

796

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<pre style="margin: 0;">+<span id="LC796" class="line" lang="haskell">                 <span class="n" style="color: #333;">casted_xi</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">xi</span> <span class="p">`</span><span class="n" style="color: #333;">mkCastTy</span><span class="p">`</span> <span class="n" style="color: #333;">kind_co</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="797" 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">

797

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<pre style="margin: 0;">+<span id="LC797" class="line" lang="haskell">                   <span class="c1" style="color: #998; font-style: italic;">-- casted_xi :: tcTypeKind(F tys)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="798" 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">

798

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<pre style="margin: 0;">+<span id="LC798" class="line" lang="haskell">                 <span class="n" style="color: #333;">homo_co</span>   <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTcGReflLeftCo</span> <span class="n" style="color: #333;">role</span> <span class="n" style="color: #333;">xi</span> <span class="n" style="color: #333;">kind_co</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="799" 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">

799

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<pre style="margin: 0;">+<span id="LC799" class="line" lang="haskell">                   <span class="c1" style="color: #998; font-style: italic;">-- homo_co :: casted_xi ~r xi</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="800" 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">

800

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<pre style="margin: 0;">+<span id="LC800" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="801" 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">

801

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<pre style="margin: 0;">+<span id="LC801" class="line" lang="haskell">                 <span class="n" style="color: #333;">final_co</span>  <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">homo_co</span> <span class="p">`</span><span class="n" style="color: #333;">mkTcTransCo</span><span class="p">`</span> <span class="n" style="color: #333;">co</span> <span class="p">`</span><span class="n" style="color: #333;">mkTcTransCo</span><span class="p">`</span> <span class="n" style="color: #333;">args_co</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="802" 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">

802

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<pre style="margin: 0;">+<span id="LC802" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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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<td class="diff-line-num new new_line" data-linenumber="803" 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">

803

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<pre style="margin: 0;">+<span id="LC803" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">result2</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">liftTcS</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">lookupFamAppInert</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">xis</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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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<td class="diff-line-num new new_line" data-linenumber="804" 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">

804

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<pre style="margin: 0;">+<span id="LC804" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">flavour</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getFlavour</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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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<td class="diff-line-num new new_line" data-linenumber="805" 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">

805

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<pre style="margin: 0;">+<span id="LC805" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">result2</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="806" 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">

806

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<pre style="margin: 0;">+<span id="LC806" class="line" lang="haskell">         <span class="p">{</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">xi</span><span class="p">,</span> <span class="n" style="color: #333;">fr</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">inert_eq_rel</span><span class="p">))</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="807" 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">

807

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<pre style="margin: 0;">+<span id="LC807" class="line" lang="haskell">             <span class="c1" style="color: #998; font-style: italic;">-- co :: F xis ~ir xi</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="808" 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">

808

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<pre style="margin: 0;">+<span id="LC808" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="809" 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">

809

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<pre style="margin: 0;">+<span id="LC809" class="line" lang="haskell">             <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">fr</span> <span class="p">`</span><span class="n" style="color: #333;">eqCanRewriteFR</span><span class="p">`</span> <span class="p">(</span><span class="n" style="color: #333;">flavour</span><span class="p">,</span> <span class="n" style="color: #333;">eq_rel</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="810" 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">

810

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<pre style="margin: 0;">+<span id="LC810" class="line" lang="haskell">                 <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">traceFlat</span> <span class="s" style="color: #d14;">"flatten/flat-cache hit"</span> <span class="p">(</span><span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tc</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">xis</span> <span class="o" style="font-weight: 600;">$$</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">xi</span><span class="p">)</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="811" 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">

811

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<pre style="margin: 0;">+<span id="LC811" class="line" lang="haskell">                    <span class="p">;</span> <span class="n" style="color: #333;">finish</span> <span class="p">(</span><span class="n" style="color: #333;">homogenise</span> <span class="n" style="color: #333;">xi</span> <span class="n" style="color: #333;">downgraded_co</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="812" 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">

812

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<pre style="margin: 0;">+<span id="LC812" class="line" lang="haskell">             <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="813" 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">

813

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<pre style="margin: 0;">+<span id="LC813" class="line" lang="haskell">               <span class="n" style="color: #333;">inert_role</span>    <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">eqRelRole</span> <span class="n" style="color: #333;">inert_eq_rel</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="814" 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">

814

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<pre style="margin: 0;">+<span id="LC814" class="line" lang="haskell">               <span class="n" style="color: #333;">role</span>          <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">eqRelRole</span> <span class="n" style="color: #333;">eq_rel</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="815" 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">

815

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<pre style="margin: 0;">+<span id="LC815" class="line" lang="haskell">               <span class="n" style="color: #333;">downgraded_co</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tcDowngradeRole</span> <span class="n" style="color: #333;">role</span> <span class="n" style="color: #333;">inert_role</span> <span class="p">(</span><span class="n" style="color: #333;">mkTcSymCo</span> <span class="n" style="color: #333;">co</span><span class="p">)</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="816" 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">

816

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<pre style="margin: 0;">+<span id="LC816" class="line" lang="haskell">                 <span class="c1" style="color: #998; font-style: italic;">-- downgraded_co :: xi ~r F xis</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="817" 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">

817

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<pre style="margin: 0;">+<span id="LC817" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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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<td class="diff-line-num new new_line" data-linenumber="818" 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">

818

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<pre style="margin: 0;">+<span id="LC818" class="line" lang="haskell">         <span class="p">;</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">-></span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="819" 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">

819

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC819" class="line" lang="haskell"></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="820" 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">

820

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<pre style="margin: 0;">+<span id="LC820" class="line" lang="haskell">         <span class="c1" style="color: #998; font-style: italic;">-- inert didn't work. Try to reduce again</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="821" 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">

821

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<pre style="margin: 0;">+<span id="LC821" class="line" lang="haskell">    <span class="kr" style="font-weight: 600;">do</span> <span class="p">{</span> <span class="n" style="color: #333;">result3</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">try_to_reduce</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">xis</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="822" 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">

822

</td>

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<pre style="margin: 0;">+<span id="LC822" class="line" lang="haskell">       <span class="p">;</span> <span class="kr" style="font-weight: 600;">case</span> <span class="n" style="color: #333;">result3</span> <span class="kr" style="font-weight: 600;">of</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="772" 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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<td class="diff-line-num new new_line" data-linenumber="823" 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">

823

</td>

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<pre style="margin: 0;">+<span id="LC823" class="line" lang="haskell">           <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">xi</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">finish</span> <span class="p">(</span><span class="n" style="color: #333;">homogenise</span> <span class="n" style="color: #333;">xi</span> <span class="n" style="color: #333;">co</span><span class="p">)</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="824" 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">

824

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<pre style="margin: 0;">+<span id="LC824" class="line" lang="haskell">           <span class="kt" style="color: #458; font-weight: 600;">Nothing</span>       <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">return</span> <span class="p">(</span><span class="n" style="color: #333;">homogenise</span> <span class="n" style="color: #333;">reduced</span> <span class="p">(</span><span class="n" style="color: #333;">mkTcReflCo</span> <span class="n" style="color: #333;">role</span> <span class="n" style="color: #333;">reduced</span><span class="p">))</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="825" 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">

825

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<pre style="margin: 0;">+<span id="LC825" class="line" lang="haskell">             <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="826" 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">

826

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<pre style="margin: 0;">+<span id="LC826" class="line" lang="haskell">               <span class="n" style="color: #333;">reduced</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">mkTyConApp</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">xis</span> <span class="p">}}}}}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="827" 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">

827

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<pre style="margin: 0;">+<span id="LC827" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="828" 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">

828

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<pre style="margin: 0;">+<span id="LC828" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- call this if the above attempts made progress.</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="829" 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">

829

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<pre style="margin: 0;">+<span id="LC829" class="line" lang="haskell">      <span class="c1" style="color: #998; font-style: italic;">-- This recursively flattens the result and then adds to the cache</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="830" 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">

830

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<pre style="margin: 0;">+<span id="LC830" class="line" lang="haskell">    <span class="n" style="color: #333;">finish</span> <span class="o" style="font-weight: 600;">::</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Xi</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Coercion</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Xi</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">Coercion</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="831" 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">

831

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<pre style="margin: 0;">+<span id="LC831" class="line" lang="haskell">    <span class="n" style="color: #333;">finish</span> <span class="p">(</span><span class="n" style="color: #333;">xi</span><span class="p">,</span> <span class="n" style="color: #333;">co</span><span class="p">)</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;">fully</span><span class="p">,</span> <span class="n" style="color: #333;">fully_co</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">bumpDepth</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">flatten_one</span> <span class="n" style="color: #333;">xi</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="832" 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">

832

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<pre style="margin: 0;">+<span id="LC832" class="line" lang="haskell">                         <span class="p">;</span> <span class="kr" style="font-weight: 600;">let</span> <span class="n" style="color: #333;">final_co</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">fully_co</span> <span class="p">`</span><span class="n" style="color: #333;">mkTcTransCo</span><span class="p">`</span> <span class="n" style="color: #333;">co</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="833" 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">

833

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<pre style="margin: 0;">+<span id="LC833" class="line" lang="haskell">                         <span class="p">;</span> <span class="n" style="color: #333;">eq_rel</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getEqRel</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="834" 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">

834

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<pre style="margin: 0;">+<span id="LC834" class="line" lang="haskell">                         <span class="p">;</span> <span class="n" style="color: #333;">flavour</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getFlavour</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="835" 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">

835

</td>

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<pre style="margin: 0;">+<span id="LC835" class="line" lang="haskell">                         <span class="p">;</span> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">eq_rel</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">flavour</span> <span class="o" style="font-weight: 600;">/=</span> <span class="kt" style="color: #458; font-weight: 600;">Derived</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span> <span class="c1" style="color: #998; font-style: italic;">-- the cache only wants Nominal eqs</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="836" 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">

836

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<pre style="margin: 0;">+<span id="LC836" class="line" lang="haskell">                           <span class="n" style="color: #333;">liftTcS</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">extendFamAppCache</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span> <span class="p">(</span><span class="n" style="color: #333;">final_co</span><span class="p">,</span> <span class="n" style="color: #333;">fully</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="837" 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">

837

</td>

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<pre style="margin: 0;">+<span id="LC837" 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;">fully</span><span class="p">,</span> <span class="n" style="color: #333;">final_co</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="838" 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">

838

</td>

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<pre style="margin: 0;">+<span id="LC838" class="line" lang="haskell"></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="839" 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">

839

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<pre style="margin: 0;">+<span id="LC839" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Returned coercion is output ~r input, where r is the role in the FlatM monad</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="840" 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">

840

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<pre style="margin: 0;">+<span id="LC840" class="line" lang="haskell"><span class="n" style="color: #333;">try_to_reduce</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">))</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="841" 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">

841

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<pre style="margin: 0;">+<span id="LC841" class="line" lang="haskell"><span class="n" style="color: #333;">try_to_reduce</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="772" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="842" 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">

842

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<pre style="margin: 0;">+<span id="LC842" 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;">flavour</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getFlavour</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="843" 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">

843

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<pre style="margin: 0;">+<span id="LC843" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">result</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">liftTcS</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">firstJustsM</span> <span class="p">[</span> <span class="n" style="color: #333;">lookupFamAppCache</span> <span class="n" style="color: #333;">flavour</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="844" 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">

844

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<pre style="margin: 0;">+<span id="LC844" class="line" lang="haskell">                                         <span class="p">,</span> <span class="n" style="color: #333;">matchFam</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">tys</span> <span class="p">]</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="845" 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">

845

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<pre style="margin: 0;">+<span id="LC845" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">downgrade</span> <span class="n" style="color: #333;">result</span> <span class="p">}</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="846" 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">

846

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<pre style="margin: 0;">+<span id="LC846" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="772" 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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<td class="diff-line-num new new_line" data-linenumber="847" 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">

847

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<pre style="margin: 0;">+<span id="LC847" class="line" lang="haskell">    <span class="n" style="color: #333;">downgrade</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercionN</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">FlatM</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">))</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="848" 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">

848

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<pre style="margin: 0;">+<span id="LC848" class="line" lang="haskell">    <span class="n" style="color: #333;">downgrade</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="849" 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">

849

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<pre style="margin: 0;">+<span id="LC849" class="line" lang="haskell">    <span class="n" style="color: #333;">downgrade</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">xi</span><span class="p">))</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="850" 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">

850

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<pre style="margin: 0;">+<span id="LC850" 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;">traceFlat</span> <span class="s" style="color: #d14;">"Eager T.F. reduction success"</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="851" 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">

851

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<pre style="margin: 0;">+<span id="LC851" class="line" lang="haskell">             <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;">tc</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">tys</span><span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">xi</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="852" 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">

852

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<pre style="margin: 0;">+<span id="LC852" class="line" lang="haskell">                  <span class="p">,</span> <span class="n" style="color: #333;">ppr</span> <span class="n" style="color: #333;">co</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">dcolon</span> <span class="o" style="font-weight: 600;"><+></span> <span class="n" style="color: #333;">ppr</span> <span class="p">(</span><span class="n" style="color: #333;">coercionKind</span> <span class="n" style="color: #333;">co</span><span class="p">)</span></span>

</pre>

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</td>

<td class="diff-line-num new new_line" data-linenumber="853" 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">

853

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<pre style="margin: 0;">+<span id="LC853" class="line" lang="haskell">                  <span class="p">]</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="854" 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">

854

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<pre style="margin: 0;">+<span id="LC854" class="line" lang="haskell">           <span class="p">;</span> <span class="n" style="color: #333;">role</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getRole</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="855" 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">

855

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<pre style="margin: 0;">+<span id="LC855" 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;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">tcDowngradeRole</span> <span class="n" style="color: #333;">role</span> <span class="kt" style="color: #458; font-weight: 600;">Nominal</span> <span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">xi</span><span class="p">))</span> <span class="p">}</span></span>

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<pre style="margin: 0;">+<span id="LC856" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC857" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- "RAE"</span></span>

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<pre style="margin: 0;"> <span id="LC858" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  -- See Note [Reduce type family applications eagerly]</span></span>

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<pre style="margin: 0;"> <span id="LC859" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">     -- the following tcTypeKind should never be evaluated, as it's just used in</span></span>

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<pre style="margin: 0;"> <span id="LC860" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">     -- casting, and casts by refl are dropped</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="872" 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">@@ -872,9 +958,8 @@ flatten_exact_fam_app_fully tc tys</td>

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<pre style="margin: 0;"> <span id="LC958" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">                       ; eq_rel <- getEqRel</span></span>

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<pre style="margin: 0;"> <span id="LC959" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">                       ; let co = maybeTcSubCo eq_rel norm_co</span></span>

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<pre style="margin: 0;"> <span id="LC960" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">                                   `mkTransCo` mkSymCo final_co</span></span>

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<pre style="margin: 0;">-<span id="LC875" class="line" lang="haskell">                       <span class="p">;</span> <span class="n" style="color: #333;">flavour</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getFlavour</span></span>

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<pre style="margin: 0;">-<span id="LC876" class="line" lang="haskell">                           <span class="c1" style="color: #998; font-style: italic;">-- NB: only extend cache with nominal, given equalities</span></span>

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<pre style="margin: 0;">-<span id="LC877" class="line" lang="haskell">                       <span class="p">;</span> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">eq_rel</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span> <span class="o" style="font-weight: 600;">&&</span> <span class="n" style="color: #333;">flavour</span> <span class="o" style="font-weight: 600;">==</span> <span class="kt" style="color: #458; font-weight: 600;">Given</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>

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<pre style="margin: 0;">+<span id="LC961" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">                           -- NB: only extend cache with nominal equalities</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC962" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">                       ; when (eq_rel == NomEq) $</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC963" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">                         liftTcS $ extendFamAppCache tc tys (co, xi)</span></span>

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<pre style="margin: 0;"> <span id="LC964" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">                       ; let role = eqRelRole eq_rel</span></span>

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<pre style="margin: 0;"> <span id="LC965" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">                             xi' = xi `mkCastTy` kind_co</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="899" 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="984" 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">@@ -899,9 +984,12 @@ flatten_exact_fam_app_fully tc tys</td>

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<pre style="margin: 0;"> <span id="LC984" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">                                            `mkTransCo` mkSymCo final_co)</span></span>

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<td class="diff-line-num old_line" data-linenumber="900" 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">

900

</td>

<td class="diff-line-num new_line" data-linenumber="985" 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">

985

</td>

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<pre style="margin: 0;"> <span id="LC985" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">                       ; return $ Just (xi, co) }</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="901" 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">

901

</td>

<td class="diff-line-num new_line" data-linenumber="986" 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">

986

</td>

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<pre style="margin: 0;"> <span id="LC986" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">               Nothing -> pure Nothing }</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="902" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="987" 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">

987

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC987" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">-}</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="902" 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">

902

</td>

<td class="diff-line-num new_line" data-linenumber="988" 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">

988

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC988" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="903" 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">

903

</td>

<td class="diff-line-num new_line" data-linenumber="989" 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">

989

</td>

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<pre style="margin: 0;"> <span id="LC989" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">{- Note [Reduce type family applications eagerly]</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="904" 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">

904

</td>

<td class="diff-line-num new_line" data-linenumber="990" 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">

990

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC990" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="905" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="991" 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">

991

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC991" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">"RAE": Update Note.</span></span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="905" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="992" 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">

992

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC992" class="line" lang="haskell"></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="905" 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">

905

</td>

<td class="diff-line-num new_line" data-linenumber="993" 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">

993

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC993" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">If we come across a type-family application like (Append (Cons x Nil) t),</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="906" 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">

906

</td>

<td class="diff-line-num new_line" data-linenumber="994" 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">

994

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC994" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">then, rather than flattening to a skolem etc, we may as well just reduce</span></span>

</pre>

</td>

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<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="907" 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">

907

</td>

<td class="diff-line-num new_line" data-linenumber="995" 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">

995

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC995" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">it on the spot to (Cons x t).  This saves a lot of intermediate steps.</span></span>

</pre>

</td>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="943" 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="1031" 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">@@ -943,6 +1031,8 @@ have any knowledge as to *why* these facts are true.</td>

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<td class="diff-line-num old_line" data-linenumber="943" 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">

943

</td>

<td class="diff-line-num new_line" data-linenumber="1031" 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">

1031

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1031" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="944" 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">

944

</td>

<td class="diff-line-num new_line" data-linenumber="1032" 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">

1032

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1032" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Note [Runaway Derived rewriting]</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="945" 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">

945

</td>

<td class="diff-line-num new_line" data-linenumber="1033" 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">

1033

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1033" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="946" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1034" 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">

1034

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1034" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">"RAE": Remove. We do occurs-checking now.</span></span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="946" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="1035" 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">

1035

</td>

<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC1035" class="line" lang="haskell"></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="946" 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">

946

</td>

<td class="diff-line-num new_line" data-linenumber="1036" 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">

1036

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1036" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">Suppose we have</span></span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="947" 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">

947

</td>

<td class="diff-line-num new_line" data-linenumber="1037" 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">

1037

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1037" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">  [WD] F a ~ T (F a)</span></span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="948" 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">

948

</td>

<td class="diff-line-num new_line" data-linenumber="1038" 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">

1038

</td>

<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC1038" class="line" lang="haskell"><span class="cm" style="color: #998; font-style: italic;">We *don't* want to fall into a hole using that to rewrite a Derived</span></span>

</pre>

</td>

</tr>

</table>

<br>

</li>

<li id="0c6b585a8a21f8340a85ca2cef89c4b1bf5a8953">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/a97a29b2f471d15fbfbc6572debdbde4c056e637...6a4ca962c448cba22b2a3f6c870a769f254f9ce1#0c6b585a8a21f8340a85ca2cef89c4b1bf5a8953"><strong>compiler/GHC/Tc/Solver/Monad.hs</strong></a>

<hr>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="91" 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">@@ -91,7 +91,7 @@ module GHC.Tc.Solver.Monad (</td>

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<pre style="margin: 0;"> <span id="LC91" class="line" lang="haskell">    <span class="nf" style="color: #900; font-weight: 600;">foldIrreds</span><span class="p">,</span></span>

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<pre style="margin: 0;"> <span id="LC92" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC93" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- The flattening cache</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC94" class="line" lang="haskell">    <span class="nf" style="color: #900; font-weight: 600;">lookupFamApp</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendFamAppCache</span><span class="p">,</span></span>

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<td class="diff-line-num new old_line" data-linenumber="95" 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="LC94" class="line" lang="haskell">    <span class="nf" style="color: #900; font-weight: 600;">lookupFamApp<span class="idiff left">Inert</span></span><span class="p"><span class="idiff">,</span></span><span class="idiff"> </span><span class="nf" style="color: #900; font-weight: 600;"><span class="idiff right">lookupFamAppCache</span></span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">extendFamAppCache</span><span class="p">,</span></span>

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<pre style="margin: 0;"> <span id="LC95" class="line" lang="haskell">    <span class="nf" style="color: #900; font-weight: 600;">pprKicked</span><span class="p">,</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="96" 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">

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<pre style="margin: 0;"> <span id="LC96" class="line" lang="haskell"></span>

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<td class="diff-line-num old_line" data-linenumber="97" 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">

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<pre style="margin: 0;"> <span id="LC97" class="line" lang="haskell">    <span class="c1" style="color: #998; font-style: italic;">-- Inert function equalities</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="189" 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="189" 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">@@ -189,6 +189,7 @@ import Data.List ( partition, mapAccumL )</td>

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<pre style="margin: 0;"> <span id="LC189" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">Data.Semigroup</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">S</span></span>

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<pre style="margin: 0;"> <span id="LC190" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Data.List.NonEmpty</span> <span class="p">(</span> <span class="kt" style="color: #458; font-weight: 600;">NonEmpty</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;">cons</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">toList</span><span class="p">,</span> <span class="nf" style="color: #900; font-weight: 600;">nonEmpty</span> <span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC191" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="k" style="font-weight: 600;">qualified</span> <span class="nn" style="color: #555;">Data.List.NonEmpty</span> <span class="k" style="font-weight: 600;">as</span> <span class="n" style="color: #333;">NE</span></span>

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<pre style="margin: 0;">+<span id="LC192" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">Control.Arrow</span> <span class="p">(</span> <span class="nf" style="color: #900; font-weight: 600;">first</span> <span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC193" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC194" class="line" lang="haskell"><span class="o" style="font-weight: 600;">#</span><span class="kr" style="font-weight: 600;">if</span> <span class="n" style="color: #333;">defined</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">DEBUG</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="195" 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">

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<pre style="margin: 0;"> <span id="LC195" class="line" lang="haskell"><span class="kr" style="font-weight: 600;">import</span> <span class="nn" style="color: #555;">GHC.Data.Graph.Directed</span></span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="404" 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="405" 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">@@ -404,13 +405,15 @@ data InertSet</td>

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<td class="diff-line-num new_line" data-linenumber="405" 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">

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<pre style="margin: 0;"> <span id="LC405" class="line" lang="haskell"></span>

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<pre style="margin: 0;"> <span id="LC406" class="line" lang="haskell">       <span class="p">,</span> <span class="n" style="color: #333;">inert_famapp_cache</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">FunEqMap</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC407" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- If    F tys :-> (co, rhs, flav),</span></span>

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<pre style="margin: 0;">-<span id="LC407" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- then  co :: F tys ~ rhs</span></span>

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<pre style="margin: 0;">-<span id="LC408" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">--       flav is [G]</span></span>

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<pre style="margin: 0;">+<span id="LC408" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- then  co :: rhs ~ F tys</span></span>

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<pre style="margin: 0;">+<span id="LC409" 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="LC410" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- Some entries in the cache might have arisen from Wanteds, and</span></span>

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<pre style="margin: 0;">+<span id="LC411" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- so this should be used only for rewriting Wanteds.</span></span>

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<pre style="margin: 0;"> <span id="LC412" 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="LC413" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- Just a hash-cons cache for use when reducing family applications</span></span>

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<pre style="margin: 0;"> <span id="LC414" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- only</span></span>

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<pre style="margin: 0;"> <span id="LC415" 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="LC413" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- Only nominal<span class="idiff left right">, Given</span> equalities end up in here (along with</span></span>

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<pre style="margin: 0;">+<span id="LC416" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- Only nominal equalities end up in here (along with</span></span>

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<pre style="margin: 0;"> <span id="LC417" class="line" lang="haskell">              <span class="c1" style="color: #998; font-style: italic;">-- top-level instances)</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="LC419" class="line" lang="haskell">       <span class="p">,</span> <span class="n" style="color: #333;">inert_solved_dicts</span>   <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">DictMap</span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span></span>

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<td class="diff-line-num unfold js-unfold new_line" data-linenumber="2371" 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">@@ -2368,13 +2371,12 @@ removeInertCt is ct =</td>

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<pre style="margin: 0;"> <span id="LC2371" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">CIrredCan</span> <span class="p">{}</span>     <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">panic</span> <span class="s" style="color: #d14;">"removeInertCt: CIrredEvCan"</span></span>

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<pre style="margin: 0;"> <span id="LC2372" class="line" lang="haskell">    <span class="kt" style="color: #458; font-weight: 600;">CNonCanonical</span> <span class="p">{}</span> <span class="o" style="font-weight: 600;">-></span> <span class="n" style="color: #333;">panic</span> <span class="s" style="color: #d14;">"removeInertCt: CNonCanonical"</span></span>

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<pre style="margin: 0;"> <span id="LC2373" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2371" class="line" lang="haskell"><span class="cd">-- | Looks up a family application in both the inerts and the famapp-cache</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2372" class="line" lang="haskell"><span class="n" style="color: #333;">lookupFamApp</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">CtFlavourRole</span><span class="p">))</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2373" class="line" lang="haskell"><span class="n" style="color: #333;">lookupFamApp</span> <span class="n" style="color: #333;">fam_tc</span> <span class="n" style="color: #333;">tys</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2374" 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="kt" style="color: #458; font-weight: 600;">IS</span> <span class="p">{</span> <span class="n" style="color: #333;">inert_famapp_cache</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">famapp_cache</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2375" class="line" lang="haskell">            <span class="p">,</span> <span class="n" style="color: #333;">inert_cans</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IC</span> <span class="p">{</span> <span class="n" style="color: #333;">inert_funeqs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">inert_funeqs</span> <span class="p">}</span> <span class="p">}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getTcSInerts</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2376" 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;">firstJusts</span> <span class="p">[</span><span class="n" style="color: #333;">lookup_inerts</span> <span class="n" style="color: #333;">inert_funeqs</span><span class="p">,</span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC2377" class="line" lang="haskell">                             <span class="n" style="color: #333;">lookup_famapps</span> <span class="n" style="color: #333;">famapp_cache</span><span class="p">])</span> <span class="p">}</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2374" class="line" lang="haskell"><span class="cd">-- | Looks up a family application in the inerts; returned coercion</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2375" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- is oriented input ~ output</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2376" class="line" lang="haskell"><span class="n" style="color: #333;">lookupFamAppInert</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">CtFlavourRole</span><span class="p">))</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2377" class="line" lang="haskell"><span class="n" style="color: #333;">lookupFamAppInert</span> <span class="n" style="color: #333;">fam_tc</span> <span class="n" style="color: #333;">tys</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2378" 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="kt" style="color: #458; font-weight: 600;">IS</span> <span class="p">{</span> <span class="n" style="color: #333;">inert_cans</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">IC</span> <span class="p">{</span> <span class="n" style="color: #333;">inert_funeqs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">inert_funeqs</span> <span class="p">}</span> <span class="p">}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getTcSInerts</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC2379" 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;">lookup_inerts</span> <span class="n" style="color: #333;">inert_funeqs</span><span class="p">)</span> <span class="p">}</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2380" class="line" lang="haskell">  <span class="kr" style="font-weight: 600;">where</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2381" class="line" lang="haskell">    <span class="n" style="color: #333;">lookup_inerts</span> <span class="n" style="color: #333;">inert_funeqs</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2382" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">EqualCtList</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CEqCan</span> <span class="p">{</span> <span class="n" style="color: #333;">cc_ev</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">ctev</span><span class="p">,</span> <span class="n" style="color: #333;">cc_rhs</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">rhs</span> <span class="p">}</span> <span class="o" style="font-weight: 600;">:|</span> <span class="kr" style="font-weight: 600;">_</span><span class="p">))</span></span>

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<pre style="margin: 0;"> <span id="LC2384" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">ctEvCoercion</span> <span class="n" style="color: #333;">ctev</span><span class="p">,</span> <span class="n" style="color: #333;">rhs</span><span class="p">,</span> <span class="n" style="color: #333;">ctEvFlavourRole</span> <span class="n" style="color: #333;">ctev</span><span class="p">)</span></span>

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<pre style="margin: 0;"> <span id="LC2385" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>

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<pre style="margin: 0;"> <span id="LC2386" class="line" lang="haskell"></span>

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<pre style="margin: 0;">-<span id="LC2385" class="line" lang="haskell">    <span class="n" style="color: #333;">lookup_famapps</span> <span class="n" style="color: #333;">famapp_cache</span></span>

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<pre style="margin: 0;">-<span id="LC2386" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">rhs</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">findFunEq</span> <span class="n" style="color: #333;">famapp_cache</span> <span class="n" style="color: #333;">fam_tc</span> <span class="n" style="color: #333;">tys</span></span>

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<pre style="margin: 0;">-<span id="LC2387" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Just</span> <span class="p">(</span><span class="n" style="color: #333;">co</span><span class="p">,</span> <span class="n" style="color: #333;">rhs</span><span class="p">,</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Given</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">NomEq</span><span class="p">))</span></span>

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<pre style="margin: 0;">-<span id="LC2388" class="line" lang="haskell">      <span class="o" style="font-weight: 600;">|</span> <span class="n" style="color: #333;">otherwise</span> <span class="o" style="font-weight: 600;">=</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>

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<pre style="margin: 0;">-<span id="LC2389" class="line" lang="haskell"></span>

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<pre style="margin: 0;">+<span id="LC2387" class="line" lang="haskell"><span class="n" style="color: #333;">lookupFamAppCache</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtFlavour</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">))</span></span>

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<pre style="margin: 0;">+<span id="LC2388" class="line" lang="haskell"><span class="n" style="color: #333;">lookupFamAppCache</span> <span class="kt" style="color: #458; font-weight: 600;">Given</span> <span class="kr" style="font-weight: 600;">_</span> <span class="kr" style="font-weight: 600;">_</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">return</span> <span class="kt" style="color: #458; font-weight: 600;">Nothing</span></span>

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<pre style="margin: 0;">+<span id="LC2389" class="line" lang="haskell">  <span class="c1" style="color: #998; font-style: italic;">-- the famapp_cache contains some wanteds. Not appropriate to rewrite a Given.</span></span>

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<pre style="margin: 0;">+<span id="LC2390" class="line" lang="haskell"><span class="n" style="color: #333;">lookupFamAppCache</span> <span class="kr" style="font-weight: 600;">_</span> <span class="n" style="color: #333;">fam_tc</span> <span class="n" style="color: #333;">tys</span></span>

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<pre style="margin: 0;">+<span id="LC2391" 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="kt" style="color: #458; font-weight: 600;">IS</span> <span class="p">{</span> <span class="n" style="color: #333;">inert_famapp_cache</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">famapp_cache</span> <span class="p">}</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getTcSInerts</span></span>

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<pre style="margin: 0;">+<span id="LC2392" 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;">findFunEq</span> <span class="n" style="color: #333;">famapp_cache</span> <span class="n" style="color: #333;">fam_tc</span> <span class="n" style="color: #333;">tys</span><span class="p">)</span> <span class="p">}</span></span>

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2393

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<pre style="margin: 0;"> <span id="LC2393" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC2394" class="line" lang="haskell"><span class="n" style="color: #333;">lookupInInerts</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">CtLoc</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcPredType</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="kt" style="color: #458; font-weight: 600;">CtEvidence</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="2395" 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">

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<pre style="margin: 0;"> <span id="LC2395" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Is this exact predicate type cached in the solved or canonicals of the InertSet?</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3209" 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="3212" 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">@@ -3209,6 +3212,7 @@ zonkTyCoVarKind tv = wrapTcS (TcM.zonkTyCoVarKind tv)</td>

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3212

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<pre style="margin: 0;"> <span id="LC3212" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC3213" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">----------------------------</span></span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="3211" 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">

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<td class="diff-line-num new_line" data-linenumber="3214" 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">

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<pre style="margin: 0;"> <span id="LC3214" class="line" lang="haskell"><span class="n" style="color: #333;">extendFamAppCache</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">TcCoercion</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">)</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="nb" style="color: #0086b3;">()</span></span>

</pre>

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<td class="diff-line-num new new_line" data-linenumber="3215" 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">

3215

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<pre style="margin: 0;">+<span id="LC3215" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- NB: co :: rhs ~ F tys, to match expectations of flattener</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC3216" class="line" lang="haskell"><span class="n" style="color: #333;">extendFamAppCache</span> <span class="n" style="color: #333;">tc</span> <span class="n" style="color: #333;">xi_args</span> <span class="n" style="color: #333;">stuff</span><span class="o" style="font-weight: 600;">@</span><span class="p">(</span><span class="kr" style="font-weight: 600;">_</span><span class="p">,</span> <span class="n" style="color: #333;">ty</span><span class="p">)</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="3217" 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">

3217

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<pre style="margin: 0;"> <span id="LC3217" 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;">dflags</span> <span class="o" style="font-weight: 600;"><-</span> <span class="n" style="color: #333;">getDynFlags</span></span>

</pre>

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<td class="diff-line-num new_line" data-linenumber="3218" 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">

3218

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<pre style="margin: 0;"> <span id="LC3218" class="line" lang="haskell">       <span class="p">;</span> <span class="n" style="color: #333;">when</span> <span class="p">(</span><span class="n" style="color: #333;">gopt</span> <span class="kt" style="color: #458; font-weight: 600;">Opt_FamAppCache</span> <span class="n" style="color: #333;">dflags</span><span class="p">)</span> <span class="o" style="font-weight: 600;">$</span></span>

</pre>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="3489" 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="3493" 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">@@ -3489,8 +3493,8 @@ checkReductionDepth loc ty</td>

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3489

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<pre style="margin: 0;"> <span id="LC3493" class="line" lang="haskell">         <span class="n" style="color: #333;">solverDepthErrorTcS</span> <span class="n" style="color: #333;">loc</span> <span class="n" style="color: #333;">ty</span> <span class="p">}</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC3494" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC3495" class="line" lang="haskell"><span class="n" style="color: #333;">matchFam</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</span><span class="p">]</span> <span class="o" style="font-weight: 600;">-></span> <span class="kt" style="color: #458; font-weight: 600;">TcS</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CoercionN</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">))</span></span>

</pre>

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<td class="diff-line-num new_line old" data-linenumber="3496" 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="LC3492" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Given (F tys) return (ty, co), where co :: <span class="idiff left right">F tys ~N ty</span></span></span>

</pre>

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<pre style="margin: 0;">-<span id="LC3493" class="line" lang="haskell"><span class="n" style="color: #333;">matchFam</span> <span class="n" style="color: #333;">tycon</span> <span class="n" style="color: #333;">args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">wrapTcS</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">matchFamTcM</span> <span class="n" style="color: #333;">tycon</span> <span class="n" style="color: #333;">args</span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3496" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Given (F tys) return (ty, co), where co :: <span class="idiff left right">ty ~N F tys</span></span></span>

</pre>

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<pre style="margin: 0;">+<span id="LC3497" class="line" lang="haskell"><span class="n" style="color: #333;">matchFam</span> <span class="n" style="color: #333;">tycon</span> <span class="n" style="color: #333;">args</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;"><span class="idiff left">fmap</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">fmap</span></span><span class="idiff"> </span><span class="p"><span class="idiff">(</span></span><span class="n" style="color: #333;"><span class="idiff">first</span></span><span class="idiff"> </span><span class="n" style="color: #333;"><span class="idiff">mkTcSymCo</span></span><span class="p"><span class="idiff">))</span></span><span class="idiff"> </span><span class="o" style="font-weight: 600;"><span class="idiff">$</span></span><span class="idiff right"> </span><span class="n" style="color: #333;">wrapTcS</span> <span class="o" style="font-weight: 600;">$</span> <span class="n" style="color: #333;">matchFamTcM</span> <span class="n" style="color: #333;">tycon</span> <span class="n" style="color: #333;">args</span></span>

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3494

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3498

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<pre style="margin: 0;"> <span id="LC3498" class="line" lang="haskell"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC3499" class="line" lang="haskell"><span class="n" style="color: #333;">matchFamTcM</span> <span class="o" style="font-weight: 600;">::</span> <span class="kt" style="color: #458; font-weight: 600;">TyCon</span> <span class="o" style="font-weight: 600;">-></span> <span class="p">[</span><span class="kt" style="color: #458; font-weight: 600;">Type</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="p">(</span><span class="kt" style="color: #458; font-weight: 600;">Maybe</span> <span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">CoercionN</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">TcType</span><span class="p">))</span></span>

</pre>

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<pre style="margin: 0;"> <span id="LC3500" class="line" lang="haskell"><span class="c1" style="color: #998; font-style: italic;">-- Given (F tys) return (ty, co), where co :: F tys ~N ty</span></span>

</pre>

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<br>

</li>

<li id="31dd222895d4f077f4769c6b6b7302983c4402e7">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/a97a29b2f471d15fbfbc6572debdbde4c056e637...6a4ca962c448cba22b2a3f6c870a769f254f9ce1#31dd222895d4f077f4769c6b6b7302983c4402e7"><strong>testsuite/tests/patsyn/should_fail/T11010.stderr</strong></a>

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1

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1

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<pre style="margin: 0;"> <span id="LC1" class="line" lang="plaintext"></span>

</pre>

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2

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<pre style="margin: 0;">-<span id="LC2" class="line" lang="plaintext">T11010.hs:9:3<span class="idiff left right">6</span>: error:</span>

</pre>

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2

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<pre style="margin: 0;">+<span id="LC2" class="line" lang="plaintext">T11010.hs:9:3<span class="idiff left right">4</span>: error:</span>

</pre>

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3

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<pre style="margin: 0;"> <span id="LC3" class="line" lang="plaintext">    • Could not deduce: a1 ~ Int</span>

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<td class="diff-line-num old_line" data-linenumber="4" 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">

4

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<pre style="margin: 0;"> <span id="LC4" class="line" lang="plaintext">      from the context: a ~ Int</span>

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<pre style="margin: 0;"> <span id="LC5" class="line" lang="plaintext">        bound by the signature for pattern synonym ‘IntFun’</span>

</pre>

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</li>

<li id="abbf4fb3aa1f761971354189e6537b8113d2e6ce">

<a href="https://gitlab.haskell.org/ghc/ghc/-/compare/a97a29b2f471d15fbfbc6572debdbde4c056e637...6a4ca962c448cba22b2a3f6c870a769f254f9ce1#abbf4fb3aa1f761971354189e6537b8113d2e6ce"><strong>testsuite/tests/roles/should_compile/Roles3.stderr</strong></a>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="21" 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="21" 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">@@ -21,7 +21,7 @@ COERCION AXIOMS</td>

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<pre style="margin: 0;"> <span id="LC21" class="line" lang="plaintext">  axiom Roles3.N:C3 :: C3 a b = a -> F3 b -> F3 b</span>

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<pre style="margin: 0;"> <span id="LC22" class="line" lang="plaintext">  axiom Roles3.N:C4 :: C4 a b = a -> F4 b -> F4 b</span>

</pre>

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<pre style="margin: 0;"> <span id="LC23" class="line" lang="plaintext">Dependent modules: []</span>

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<pre style="margin: 0;">-<span id="LC24" class="line" lang="plaintext">Dependent packages: [base-4.1<span class="idiff left right">5</span>.0.0, ghc-bignum-1.0, ghc-prim-0.7.0]</span>

</pre>

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<pre style="margin: 0;">+<span id="LC24" class="line" lang="plaintext">Dependent packages: [base-4.1<span class="idiff left right">6</span>.0.0, ghc-bignum-1.0, ghc-prim-0.7.0]</span>

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<pre style="margin: 0;"> <span id="LC25" class="line" lang="plaintext"></span>

</pre>

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<pre style="margin: 0;"> <span id="LC26" class="line" lang="plaintext">==================== Typechecker ====================</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="27" 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">

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<pre style="margin: 0;"> <span id="LC27" class="line" lang="plaintext">Roles3.$tcC4</span>

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<td class="diff-line-num unfold js-unfold old_line" data-linenumber="48" 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="48" 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">@@ -48,20 +48,18 @@ Roles3.$tc'C:C1</td>

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<td class="diff-line-num old_line" data-linenumber="48" 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">

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<pre style="margin: 0;"> <span id="LC48" class="line" lang="plaintext">  = GHC.Types.TyCon</span>

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<td class="diff-line-num old_line" data-linenumber="49" 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">

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<pre style="margin: 0;"> <span id="LC49" class="line" lang="plaintext">      4508088879886988796## 13962145553903222779## Roles3.$trModule</span>

</pre>

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<td class="diff-line-num old_line" data-linenumber="50" 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">

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<pre style="margin: 0;"> <span id="LC50" class="line" lang="plaintext">      (GHC.Types.TrNameS "'C:C1"#) 1 $krep</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="51" 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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<td class="diff-line-num new_line old" data-linenumber="51" 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="LC51" class="line" lang="plaintext">$krep [InlPrag=NOUSERINLINE[~]] = GHC.Types.KindRepVar 0</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="52" 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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<td class="diff-line-num new_line old" data-linenumber="51" 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="LC52" class="line" lang="plaintext">$krep [InlPrag=NOUSERINLINE[~]] = GHC.Types.KindRepVar 1</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="53" 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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<td class="diff-line-num new_line old" data-linenumber="51" 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="LC53" class="line" lang="plaintext">$krep [InlPrag=NOUSERINLINE[~]] = GHC.Types.KindRepFun $krep $krep</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="54" 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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<td class="diff-line-num new_line old" data-linenumber="51" 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="LC54" class="line" lang="plaintext">$krep [InlPrag=NOUSERINLINE[~]] = GHC.Types.KindRepFun $krep $krep</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="55" 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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<td class="diff-line-num new_line old" data-linenumber="51" 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="LC55" class="line" lang="plaintext">$krep [InlPrag=NOUSERINLINE[~]] = GHC.Types.KindRepFun $krep $krep</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="56" 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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<td class="diff-line-num new_line old" data-linenumber="51" 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="LC56" class="line" lang="plaintext">$krep [InlPrag=NOUSERINLINE[~]]</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="57" 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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<td class="diff-line-num new_line old" data-linenumber="51" 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="LC57" class="line" lang="plaintext">  = GHC.Types.KindRepFun GHC.Types.krep$* $krep</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="58" 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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<td class="diff-line-num new_line old" data-linenumber="51" 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="LC58" class="line" lang="plaintext">$krep [InlPrag=NOUSERINLINE[~]]</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="59" 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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<td class="diff-line-num new_line old" data-linenumber="51" 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="LC59" class="line" lang="plaintext">  = GHC.Types.KindRepFun GHC.Types.krep$* $krep</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="60" 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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<td class="diff-line-num new_line old" data-linenumber="51" 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="LC60" class="line" lang="plaintext">$krep [InlPrag=NOUSERINLINE[~]] = GHC.Types.KindRepFun $krep $krep</span>

</pre>

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<td class="diff-line-num old old_line" data-linenumber="61" 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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<td class="diff-line-num new_line old" data-linenumber="51" 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="LC61" class="line" lang="plaintext">$krep [InlPrag=NOUSERINLINE[~]]</span>

</pre>

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<td class="diff-line-num new old_line" data-linenumber="62" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="51" 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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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC51" class="line" lang="plaintext">$krep [InlPrag=[~]] = GHC.Types.KindRepVar 0</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="62" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="52" 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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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC52" class="line" lang="plaintext">$krep [InlPrag=[~]] = GHC.Types.KindRepVar 1</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="62" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="53" 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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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC53" class="line" lang="plaintext">$krep [InlPrag=[~]] = GHC.Types.KindRepFun $krep $krep</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="62" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="54" 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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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC54" class="line" lang="plaintext">$krep [InlPrag=[~]] = GHC.Types.KindRepFun $krep $krep</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="62" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="55" 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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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC55" class="line" lang="plaintext">$krep [InlPrag=[~]] = GHC.Types.KindRepFun $krep $krep</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="62" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="56" 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">

56

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<pre style="margin: 0;">+<span id="LC56" class="line" lang="plaintext">$krep [InlPrag=[~]] = GHC.Types.KindRepFun GHC.Types.krep$* $krep</span>

</pre>

</td>

</tr>

<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="62" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="57" 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">

57

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<pre style="margin: 0;">+<span id="LC57" class="line" lang="plaintext">$krep [InlPrag=[~]] = GHC.Types.KindRepFun GHC.Types.krep$* $krep</span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="62" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="58" 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">

58

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC58" class="line" lang="plaintext">$krep [InlPrag=[~]] = GHC.Types.KindRepFun $krep $krep</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="62" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="59" 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">

59

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<pre style="margin: 0;">+<span id="LC59" class="line" lang="plaintext">$krep [InlPrag=[~]]</span>

</pre>

</td>

</tr>

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<td class="diff-line-num old_line" data-linenumber="62" 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">

62

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<td class="diff-line-num new_line" data-linenumber="60" 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">

60

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<pre style="margin: 0;"> <span id="LC60" class="line" lang="plaintext">  = GHC.Types.KindRepTyConApp GHC.Types.$tcConstraint []</span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="63" 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">

63

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<td class="diff-line-num new_line old" data-linenumber="61" 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="LC63" class="line" lang="plaintext">$krep [InlPrag=<span class="idiff left right">NOUSERINLINE</span>[~]] = GHC.Types.KindRepFun $krep $krep</span>

</pre>

</td>

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<td class="diff-line-num old old_line" data-linenumber="64" 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">

64

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<td class="diff-line-num new_line old" data-linenumber="61" 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="LC64" class="line" lang="plaintext">$krep [InlPrag=<span class="idiff left right">NOUSERINLINE</span>[~]]</span>

</pre>

</td>

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<td class="diff-line-num new old_line" data-linenumber="65" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="61" 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="LC61" class="line" lang="plaintext">$krep [InlPrag=[~]] = GHC.Types.KindRepFun $krep $krep</span>

</pre>

</td>

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<tr class="line_holder new" id="" style="line-height: 1.6;">

<td class="diff-line-num new old_line" data-linenumber="65" 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">

</td>

<td class="diff-line-num new new_line" data-linenumber="62" 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">

62

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<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">

<pre style="margin: 0;">+<span id="LC62" class="line" lang="plaintext">$krep [InlPrag=[~]]</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="65" 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">

65

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<td class="diff-line-num new_line" data-linenumber="63" 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">

63

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<pre style="margin: 0;"> <span id="LC63" class="line" lang="plaintext">  = GHC.Types.KindRepTyConApp</span>

</pre>

</td>

</tr>

<tr class="line_holder" id="" style="line-height: 1.6;">

<td class="diff-line-num old_line" data-linenumber="66" 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">

66

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<td class="diff-line-num new_line" data-linenumber="64" 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">

64

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<pre style="margin: 0;"> <span id="LC64" class="line" lang="plaintext">      GHC.Types.$tc~ ((:) GHC.Types.krep$* ((:) $krep ((:) $krep [])))</span>

</pre>

</td>

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<td class="diff-line-num old_line" data-linenumber="67" 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">

67

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<td class="diff-line-num new_line" data-linenumber="65" 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">

65

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<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">

<pre style="margin: 0;"> <span id="LC65" class="line" lang="plaintext">$krep [InlPrag=[~]]</span>

</pre>

</td>

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