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<h3 style="margin-top: 20px; margin-bottom: 10px;">
Marge Bot pushed to branch wip/marge_bot_batch_merge_job at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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Commits:
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<ul>
<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/023f36f516aa4bd9453903d5039cf8eec6010731">023f36f5</a></strong>
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<span> by Rodrigo Mesquita </span> <i> at 2025-01-10T14:57:48-05:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #28272d; position: relative; font-family: "GitLab Mono","JetBrains Mono","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;'>user_guide: Note -pgmP/-optP are for /Haskell/-CPP
Fixes #25574
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<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/e1c133f2fed2c006b1158fc2d6b33aa8b9069b2e">e1c133f2</a></strong>
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<span> by Ben Gamari </span> <i> at 2025-01-10T14:58:25-05:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #28272d; position: relative; font-family: "GitLab Mono","JetBrains Mono","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;'>dump-decls: Suppress unit-ids
While the testsuite driver already normalizes these away, they are
nevertheless a severe nuisance when diffing outside of the testsuite.
Intriguingly, this doesn't completely eliminate the unit IDs; some
wired-in names are still printed. However, this is a cheap and helpful
improvement over the status quo so I am simply going to accept this.
Fixes #25334.
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<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/15b243c0fc3d0a1168cbd743bc8075999e7c3962">15b243c0</a></strong>
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<span> by Mike Pilgrem </span> <i> at 2025-01-11T08:44:11-05:00 </i>
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<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #28272d; position: relative; font-family: "GitLab Mono","JetBrains Mono","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;'>Re CLC #300 - Specify fmap for NonEmpty as map
See:
* https://github.com/haskell/core-libraries-committee/issues/300
Seeks to:
* move existing instances for NonEmpty (except of Eq and Ord) out of GHC.Internal.Base into new GHC.Internal.Data.NonEmpty (to avoid otherwise unavoidable cycles in the module graph);
* move map out of Data.List.NonEmpty (base package) into GHC.Internal.Data.NonEmpty;
* define fmap as map for NonEmpty instance of Functor, avoiding code duplication;
* re-export map from existing GHC.Internal.Data.List.NonEmpty; and
* re-export map from Data.List.NonEmpty (base package);
without breaking anything in the GHC repository.
Various tests *.stdout and *.stderr files are amended also.
</pre>
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<li>
<strong style="font-weight: 600;"><a href="https://gitlab.haskell.org/ghc/ghc/-/commit/669b8b42c0d913d8a9b30570eb3169e79313c3f3">669b8b42</a></strong>
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<span> by Patrick </span> <i> at 2025-01-11T08:44:12-05:00 </i>
</div>
<pre class="commit-message" style='white-space: pre-wrap; display: block; font-size: 14px; color: #28272d; position: relative; font-family: "GitLab Mono","JetBrains Mono","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;'>Fix #25611. Enhances the kind inference for data family instances,
by including the RHS's constraints when kind-checking LHS.
Type checker changes:
In `tcDataFamInstHeader`, `kcConDecls` the H98-style decls
and newtype decls, even those in GADT syntax, but NOT for
general GADT decls.
Testsuite changes:
1. The test to ensure kind specialization remains correctly handled even
if we include the RHS's constrains:
* T25611d
2. Infer result kind from datacon.
* H98 newtype case: T25611a
* H98 data case: T25611b
3. Two tests with additional errors report:
* UnliftedNewtypesFamilyKindFail2
* UnliftedNewtypesInstanceFail
4. Due to better kind inference,
move should_fail test UnliftedNewtypesUnassociatedFamilyFail
to should_compile test T25611c.
5. Additional test to we default the kind of the data instance correctly
without UnliftedNewtypes or UnliftedDatatypes:
* DataInstanceKindsDefaults
Also a few notes are updated to reflect the changes.
Co-authored-by: Simon Peyton Jones <simon.peytonjones@gmail.com>
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compiler/GHC/Tc/Gen/HsType.hs
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libraries/base/changelog.md
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