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Marge Bot pushed to branch master at <a href="https://gitlab.haskell.org/ghc/ghc">Glasgow Haskell Compiler / GHC</a>
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Commits:
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<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
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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/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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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/unsatisfiable/T11503_Unsat.hs
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testsuite/tests/unsatisfiable/T14141_Unsat.hs
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testsuite/tests/unsatisfiable/T14339_Unsat.hs
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testsuite/tests/unsatisfiable/T15232_Unsat.hs
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testsuite/tests/unsatisfiable/T22696_Unsat.stderr
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testsuite/tests/unsatisfiable/UnsatClassMethods.hs
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