Teo Camarasu pushed to branch wip/T26930 at Glasgow Haskell Compiler / GHC Commits: 4c40df3d by fendor at 2026-02-20T10:24:48-05:00 Add optional `SrcLoc` to `StackAnnotation` class `StackAnnotation`s give access to an optional `SrcLoc` field that user-added stack annotations can use to provide better backtraces in both error messages and when decoding the callstack. We update builtin stack annotations such as `StringAnnotation` and `ShowAnnotation` to also capture the `SrcLoc` of the current `CallStack` to improve backtraces by default (if stack annotations are used). This change is backwards compatible with GHC 9.14.1. - - - - - fd9aaa28 by Simon Hengel at 2026-02-20T10:25:33-05:00 docs: Fix grammar in explicit_namespaces.rst - - - - - 44354255 by Vo Minh Thu at 2026-02-20T18:53:06-05:00 GHCi: add a :version command. This looks like: ghci> :version GHCi, version 9.11.20240322 This closes #24576. Co-Author: Markus Läll - - - - - eab3dbba by Andreas Klebinger at 2026-02-20T18:53:51-05:00 hadrian/build-cabal: Better respect and utilize -j * We now respect -j<n> for the cabal invocation to build hadrian rather than hardcoding -j * We use the --semaphore flag to ensure cabal/ghc build the hadrian executable in parallel using the -jsem mechanism. Saves 10-15s on fresh builds for me. Fixes #26876 - - - - - 1161b9ef by Teo Camarasu at 2026-02-23T22:39:03+00:00 ghc-internal: avoid depending on GHC.Internal.Control.Monad.Fix This module contains the definition of MonadFix, since we want an instance for IO, that instance requires a lot of machinery and we want to avoid an orphan instance, this will naturally be quite high up in the dependency graph. So we want to avoid other modules depending on it as far as possible. On Windows, the IO manager depends on the RTSFlags type, which transtively depends on MonadFix. We refactor things to avoid this dependency, which would have caused a regression. Resolves #26875 Metric Decrease: T12227 - - - - - 42ef67b2 by Teo Camarasu at 2026-02-24T10:24:14+00:00 ghc-internal: float Generics to top of module graph GHC.Internal.Generics currently exists in the middle of the ghc-internal module graph. It defines the Generics typeclass. Stuff below it gets an instance in GHC.Internal.Generics whereas stuff above it gets instances in their own modules. This splits the module graph in two and adds a lot of transitive dependencies to stuff above it. It also leads to a hs-boot loop via ByteOrder Resolves #26930 - - - - - 59 changed files: - compiler/GHC/Builtin/Names.hs - + docs/users_guide/10.0.1-notes.rst - docs/users_guide/exts/explicit_namespaces.rst - docs/users_guide/ghci.rst - ghc/GHCi/UI.hs - hadrian/build-cabal - libraries/base/src/Control/Arrow.hs - libraries/base/src/System/IO.hs - libraries/ghc-experimental/CHANGELOG.md - libraries/ghc-experimental/src/GHC/Stack/Annotation/Experimental.hs - + libraries/ghc-experimental/tests/Makefile - + libraries/ghc-experimental/tests/all.T - + libraries/ghc-experimental/tests/backtraces/Makefile - + libraries/ghc-experimental/tests/backtraces/T26806a.hs - + libraries/ghc-experimental/tests/backtraces/T26806a.stderr - + libraries/ghc-experimental/tests/backtraces/T26806b.hs - + libraries/ghc-experimental/tests/backtraces/T26806b.stderr - + libraries/ghc-experimental/tests/backtraces/T26806c.hs - + libraries/ghc-experimental/tests/backtraces/T26806c.stderr - + libraries/ghc-experimental/tests/backtraces/all.T - libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs - − libraries/ghc-internal/src/GHC/Internal/ByteOrder.hs-boot - libraries/ghc-internal/src/GHC/Internal/Control/Arrow.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fix.hs - libraries/ghc-internal/src/GHC/Internal/Control/Monad/ST/Lazy/Imp.hs - libraries/ghc-internal/src/GHC/Internal/Data/Foldable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Const.hs - libraries/ghc-internal/src/GHC/Internal/Data/Functor/Identity.hs - libraries/ghc-internal/src/GHC/Internal/Data/Monoid.hs - libraries/ghc-internal/src/GHC/Internal/Data/Semigroup/Internal.hs - libraries/ghc-internal/src/GHC/Internal/Data/Traversable.hs - libraries/ghc-internal/src/GHC/Internal/Data/Version.hs - libraries/ghc-internal/src/GHC/Internal/Event/Windows/ManagedThreadPool.hs - libraries/ghc-internal/src/GHC/Internal/Functor/ZipList.hs - libraries/ghc-internal/src/GHC/Internal/Generics.hs - libraries/ghc-internal/src/GHC/Internal/IO/Exception.hs - libraries/ghc-internal/src/GHC/Internal/RTS/Flags/Test.hsc - libraries/ghc-internal/src/GHC/Internal/Read.hs - libraries/ghc-internal/src/GHC/Internal/Stack/Annotation.hs - libraries/ghc-internal/src/GHC/Internal/System/IO.hs - libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Bits.hs - libraries/ghc-internal/tests/stack-annotation/ann_frame001.stdout - libraries/ghc-internal/tests/stack-annotation/ann_frame002.stdout - libraries/ghc-internal/tests/stack-annotation/ann_frame003.stdout - libraries/ghc-internal/tests/stack-annotation/ann_frame004.stdout - libraries/ghc-internal/tests/stack-annotation/ann_frame005.stdout - testsuite/tests/ghci/scripts/ListTuplePunsPpr.stdout - testsuite/tests/ghci/scripts/T10963.stderr - testsuite/tests/ghci/scripts/T4175.stdout - testsuite/tests/ghci/scripts/ghci064.stdout - testsuite/tests/interface-stability/base-exports.stdout - testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/base-exports.stdout-mingw32 - testsuite/tests/interface-stability/base-exports.stdout-ws-32 - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 - testsuite/tests/interface-stability/template-haskell-exports.stdout - testsuite/tests/mdo/should_fail/mdofail006.stderr The diff was not included because it is too large. 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