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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Simon Peyton Jones pushed to branch wip/T23307 at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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Commits:
</h4>
<ul>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/57277662989b97dbf5ddc034d6c41ce39ab674ab">57277662</a></strong>
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<span> by sheaf </span> <i> at 2023-04-29T20:23:06+02:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add the Unsatisfiable class
This commit implements GHC proposal #433, adding the Unsatisfiable
class to the GHC.TypeError module. This provides an alternative to
TypeError for which error reporting is more predictable: we report it
when we are reporting unsolved Wanted constraints.
Fixes #14983 #16249 #16906 #18310 #20835
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/00a8a5ff9abf5bb1a0c2a9225c7bca5ec3bdf306">00a8a5ff</a></strong>
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<span> by Torsten Schmits </span> <i> at 2023-04-30T03:45:09-04:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Add structured error messages for GHC.Rename.Names
Tracking ticket: #20115
MR: !10336
This converts uses of `mkTcRnUnknownMessage` to newly added constructors
of `TcRnMessage`.
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/fbdea7797d18b85e588fcb048c5d561a4ebd5e7b">fbdea779</a></strong>
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<span> by Simon Peyton Jones </span> <i> at 2023-05-01T19:55:08+01:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Make GHC.Types.Id.Make.shouldUnpackTy a bit more clever
As #23307, GHC.Types.Id.Make.shouldUnpackTy was leaving money on the
table, failing to unpack arguments that are perfectly unpackable.
The fix is pretty easy; see Note [Recursive unboxing]
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/b4cf71f85321cc72ea80d1364a46b04d0851a777">b4cf71f8</a></strong>
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<span> by Simon Peyton Jones </span> <i> at 2023-05-01T19:55:08+01:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Wibbles
</pre>
</li>
<li>
<strong style="font-weight: bold;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/79aa2318ed1909f25e04b849896bf74e5f66d4f2">79aa2318</a></strong>
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<span> by Simon Peyton Jones </span> <i> at 2023-05-01T22:52:47+01:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 0.875rem; color: #333238; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; border-radius: 2px; margin: 0; padding: 8px 12px; border: 1px solid #dcdcde;'>Make it even more clever
adding T23307a
</pre>
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30 changed files:
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<a href="#0887cf39c5cdf9cf8d6758f410d7dab3023c0d77">
compiler/GHC/Builtin/Names.hs
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compiler/GHC/Builtin/Types.hs
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compiler/GHC/Builtin/Types/Prim.hs
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compiler/GHC/Core/Type.hs
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compiler/GHC/Data/Bag.hs
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compiler/GHC/Rename/Names.hs
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compiler/GHC/Tc/Errors.hs
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compiler/GHC/Tc/Errors/Ppr.hs
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compiler/GHC/Tc/Errors/Types.hs
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compiler/GHC/Tc/Instance/Class.hs
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compiler/GHC/Tc/Instance/FunDeps.hs
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compiler/GHC/Tc/Solver.hs
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compiler/GHC/Tc/Solver/Monad.hs
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compiler/GHC/Tc/Solver/Types.hs
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compiler/GHC/Tc/TyCl/Instance.hs
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compiler/GHC/Tc/Types/Constraint.hs
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compiler/GHC/Tc/Utils/Env.hs
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compiler/GHC/Tc/Utils/TcType.hs
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compiler/GHC/Tc/Validity.hs
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compiler/GHC/Types/Error/Codes.hs
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compiler/GHC/Types/Hint.hs
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compiler/GHC/Types/Hint/Ppr.hs
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compiler/GHC/Types/Id/Make.hs
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docs/users_guide/9.8.1-notes.rst
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libraries/base/GHC/TypeError.hs
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libraries/base/changelog.md
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testsuite/tests/deriving/should_compile/T17324.stderr
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testsuite/tests/driver/t22391/t22391.stderr
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testsuite/tests/driver/t22391/t22391j.stderr
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testsuite/tests/ghci/prog018/prog018.stdout
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