March 2026 - ghc-commits

[Git][ghc/ghc] Deleted branch wip/T26875-1
by Teo Camarasu (＠teo) 12 Mar '26

12 Mar '26

Teo Camarasu deleted branch wip/T26875-1 at Glasgow Haskell Compiler / GHC -- You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/jeltsch/system-io-implementation-into-base
by Wolfgang Jeltsch (＠jeltsch) 12 Mar '26

12 Mar '26

Wolfgang Jeltsch pushed new branch wip/jeltsch/system-io-implementation-into-base at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/jeltsch/system-io-implementat… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/jeltsch/text-read-uncovering
by Wolfgang Jeltsch (＠jeltsch) 12 Mar '26

12 Mar '26

Wolfgang Jeltsch pushed new branch wip/jeltsch/text-read-uncovering at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/jeltsch/text-read-uncovering You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL] 2 commits: Fix terminfo dependency
by Sven Tennie (＠supersven) 12 Mar '26

12 Mar '26

Sven Tennie pushed to branch wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL at Glasgow Haskell Compiler / GHC Commits: 83309247 by Sven Tennie at 2026-03-12T18:08:28+00:00 Fix terminfo dependency - - - - - f434973e by Sven Tennie at 2026-03-12T18:08:48+00:00 Simplify terminfo flag logic - - - - - 1 changed file: - hadrian/src/Settings/Packages.hs Changes: ===================================== hadrian/src/Settings/Packages.hs ===================================== @@ -92,7 +92,7 @@ packageArgs = do -- target code, otherwise enable for stage2 since that runs on -- the target and can use target's own ghci object linker [ andM [expr (ghcWithInterpreter stage), orM [expr (notM cross), stage2]] `cabalFlag` "internal-interpreter" - , orM [ notM cross, haveCurses ] `cabalFlag` "terminfo" + , haveCurses `cabalFlag` "terminfo" , arg "-build-tool-depends" , staged (buildFlag UseLibzstd) `cabalFlag` "with-libzstd" -- ROMES: While the boot compiler is not updated wrt -this-unit-id @@ -128,7 +128,7 @@ packageArgs = do -------------------------------- ghcPkg -------------------------------- , package ghcPkg ? - builder (Cabal Flags) ? orM [ notM cross, haveCurses ] `cabalFlag` "terminfo" + builder (Cabal Flags) ? haveCurses `cabalFlag` "terminfo" -------------------------------- ghcBoot ------------------------------ , package ghcBoot ? @@ -196,11 +196,8 @@ packageArgs = do -- and executables. This flag disables the latter. , package haskeline ? builder (Cabal Flags) ? arg "-examples" - -- Don't depend upon terminfo when cross-compiling to avoid unnecessary - -- dependencies unless the user provided ncurses explicitly. - -- TODO: Perhaps the user should be able to explicitly enable/disable this. , package haskeline ? - builder (Cabal Flags) ? orM [ notM cross, haveCurses ] `cabalFlag` "terminfo" + builder (Cabal Flags) ? haveCurses `cabalFlag` "terminfo" -------------------------------- terminfo ------------------------------ , package terminfo ? View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/9bcfd140909e9223ebaba055a5ebc6… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/9bcfd140909e9223ebaba055a5ebc6… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/T26831] Immprove lambda handling in Prep
by Simon Peyton Jones (＠simonpj) 12 Mar '26

12 Mar '26

Simon Peyton Jones pushed to branch wip/T26831 at Glasgow Haskell Compiler / GHC Commits: 2655e4f2 by Simon Peyton Jones at 2026-03-12T17:43:18+00:00 Immprove lambda handling in Prep All Lam in `body` rather than just `rhs`; indeed collapse the two. Then CoreToStg creates the lambda if needed - - - - - 4 changed files: - compiler/GHC/Core/Unfold.hs - compiler/GHC/CoreToStg.hs - compiler/GHC/CoreToStg/Prep.hs - testsuite/tests/simplCore/should_compile/T15205.stderr Changes: ===================================== compiler/GHC/Core/Unfold.hs ===================================== @@ -794,6 +794,7 @@ classOpSize opts cls top_args (dict_arg:other_val_args) arg_discount (Var dict) | dict `elem` top_args = unitBag (dict, dict_discount) arg_discount _ = emptyBag +-- TODO: document this change! dict_discount | null other_val_args = unfoldingDictDiscount opts | otherwise = unfoldingDictDiscount opts + unfoldingFunAppDiscount opts ===================================== compiler/GHC/CoreToStg.hs ===================================== @@ -420,16 +420,22 @@ coreToStgExpr expr@(App _ _) res_ty = exprType expr (app_head, args, ticks) = myCollectArgs expr res_ty -coreToStgExpr expr@(Lam _ _) - = let - (args, body) = myCollectBinders expr - in - case filterStgBinders args of - - [] -> coreToStgExpr body - - _ -> pprPanic "coretoStgExpr" $ - text "Unexpected value lambda:" $$ ppr expr +coreToStgExpr expr@(Lam {}) + | null val_bndrs + = coreToStgExpr body + | otherwise + = do { body' <- extendVarEnvCts [ (a, LambdaBound) | a <- val_bndrs ] $ + coreToStgExpr body + ; let body_ty = exprType body + fun_ty = mkLamTypes bndrs body_ty + rhs = StgRhsClosure noExtFieldSilent currentCCS + ReEntrant val_bndrs body' body_ty + tmp_fun = mkTemplateLocal 0 fun_ty + ; return (StgLet noExtFieldSilent (StgNonRec tmp_fun rhs) $ + StgApp tmp_fun []) } + where + (bndrs, body) = myCollectBinders expr + val_bndrs = filterStgBinders bndrs coreToStgExpr (Tick tick expr) = do ===================================== compiler/GHC/CoreToStg/Prep.hs ===================================== @@ -925,6 +925,7 @@ cpeBody env expr rhsToBody :: CorePrepEnv -> CpeRhs -> UniqSM (Floats, CpeBody) -- Remove top level lambdas by let-binding +{- rhsToBody env (Tick t expr) | tickishScoped t == NoScope -- only float out of non-scoped annotations = do { (floats, expr') <- rhsToBody env expr @@ -946,6 +947,7 @@ rhsToBody env expr@(Lam {}) -- See Note [No eta reduction needed in rhsToBody] ; return (unitFloat float, Var fn) } where (bndrs,_) = collectBinders expr +-} rhsToBody _env expr = return (emptyFloats, expr) ===================================== testsuite/tests/simplCore/should_compile/T15205.stderr ===================================== @@ -10,7 +10,7 @@ f :: forall a b. C a b => a -> b Str=<1P(A,1C(1,C(1,L)))><L>, Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, WorkFree=True, Expandable=True, - Guidance=IF_ARGS [30 0] 40 0}] + Guidance=IF_ARGS [90 0] 40 0}] f = \ (@a) (@b) ($dC :: C a b) (x :: a) -> op @a @b $dC x x View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/2655e4f2bac7cb4576058e32064017a… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/2655e4f2bac7cb4576058e32064017a… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/hpc-interpreter
by Matthew Pickering (＠mpickering) 12 Mar '26

12 Mar '26

Matthew Pickering pushed new branch wip/hpc-interpreter at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/hpc-interpreter You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL] Simplify terminfo flag logic
by Sven Tennie (＠supersven) 12 Mar '26

12 Mar '26

Sven Tennie pushed to branch wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL at Glasgow Haskell Compiler / GHC Commits: 9bcfd140 by GHC GitLab CI at 2026-03-12T15:55:53+00:00 Simplify terminfo flag logic - - - - - 1 changed file: - hadrian/src/Settings/Packages.hs Changes: ===================================== hadrian/src/Settings/Packages.hs ===================================== @@ -92,7 +92,7 @@ packageArgs = do -- target code, otherwise enable for stage2 since that runs on -- the target and can use target's own ghci object linker [ andM [expr (ghcWithInterpreter stage), orM [expr (notM cross), stage2]] `cabalFlag` "internal-interpreter" - , orM [ notM cross, haveCurses ] `cabalFlag` "terminfo" + , haveCurses `cabalFlag` "terminfo" , arg "-build-tool-depends" , staged (buildFlag UseLibzstd) `cabalFlag` "with-libzstd" -- ROMES: While the boot compiler is not updated wrt -this-unit-id @@ -128,7 +128,7 @@ packageArgs = do -------------------------------- ghcPkg -------------------------------- , package ghcPkg ? - builder (Cabal Flags) ? orM [ notM cross, haveCurses ] `cabalFlag` "terminfo" + builder (Cabal Flags) ? haveCurses `cabalFlag` "terminfo" -------------------------------- ghcBoot ------------------------------ , package ghcBoot ? @@ -196,13 +196,8 @@ packageArgs = do -- and executables. This flag disables the latter. , package haskeline ? builder (Cabal Flags) ? arg "-examples" - -- Don't depend upon terminfo in early stages or when cross-compiling, - -- to avoid unnecessary dependencies unless the user provided ncurses - -- explicitly. For non-cross builds, terminfo is only enabled from - -- Stage2 onwards (i.e. when building the final compiler). - -- TODO: Perhaps the user should be able to explicitly enable/disable this. , package haskeline ? - builder (Cabal Flags) ? orM [ andM [notM cross, return (stage >= Stage2)], haveCurses ] `cabalFlag` "terminfo" + builder (Cabal Flags) ? haveCurses `cabalFlag` "terminfo" -------------------------------- terminfo ------------------------------ , package terminfo ? View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/9bcfd140909e9223ebaba055a5ebc66… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/9bcfd140909e9223ebaba055a5ebc66… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 9 commits: hadrian: remove redundant library/rts ways definitions from stock flavours
by Marge Bot (＠marge-bot) 12 Mar '26

12 Mar '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: dfc2b01b by Cheng Shao at 2026-03-11T20:57:19+01:00 hadrian: remove redundant library/rts ways definitions from stock flavours This patch removes redundant library/rts ways definitions from stock flavours in hadrian; they can be replaced by applying appropriate filters on `defaultFlavour`. - - - - - 5811b146 by Teo Camarasu at 2026-03-12T10:50:52-04:00 ghc-internal: move bits Weak of finalizer interface to base We move parts of the Weak finalizer interface to `base` only the parts that the RTS needs to know about are kept in `ghc-internal`. This lets us then prune our imports somewhat and get rid of some SOURCE imports. Resolves #26985 - - - - - 6adfde46 by Simon Jakobi at 2026-03-12T10:50:52-04:00 Add regression test for #2057 Test that GHC stops after an interface-file error instead of continuing into the linker. The test constructs a stale package dependency on purpose. `pkgB` is compiled against one version of package `A`, then the same unit id is replaced by an incompatible build of `A`. When `Main` imports `B`, GHC has to read `B.hi`, finds an unfolding that still mentions the old `A`, and should fail while loading interfaces. Closes #2057. Assisted-by: Codex - - - - - 98689f07 by Sylvain Henry at 2026-03-12T10:51:25-04:00 JS: fix recompilation avoidance (#23013) - we were checking the mtime of the *.jsexe directory, not of a file - we were not computing the PkgsLoaded at all - - - - - c679ab3c by Cheng Shao at 2026-03-12T10:51:26-04:00 hadrian: bump index state & bootstrap plans This patch bumps hadrian index state & bootstrap plans: - The updated index state allows bootstrapping from 9.14 without cabal allow-newer hacks - The updated bootstrap plans all contain shake-0.19.9 containing important bugfix, allowing a subsequent patch to bump shake bound to ensure the bugfix is included - ghc 9.14.1 bootstrap plan is added - - - - - bc6f542a by Cheng Shao at 2026-03-12T10:51:26-04:00 ci: add ghc 9.14.1 to bootstrap matrix This patch adds ghc 9.14.1 to bootstrap matrix, so that we test bootstrapping from ghc 9.14.1. - - - - - 46f10988 by Sylvain Henry at 2026-03-12T10:51:32-04:00 T17912: wait for opener thread to block before killing it (#24739) Instead of a fixed 1000ms delay, poll threadStatus until the opener thread is in BlockedOnForeignCall, ensuring killThread only fires once the thread is provably inside the blocking open() syscall. This prevents the test from accidentally passing on Windows due to scheduling races. - - - - - 6cc98c5d by Cheng Shao at 2026-03-12T10:51:32-04:00 template-haskell: fix redundant import in Language.Haskell.TH.Quote This patch fixes a redundant import in `Language.Haskell.TH.Quote` that causes a ghc build failure when bootstrapping from 9.14 with validate flavours. Fixes #27014. - - - - - c37fcd8f by Brandon Simmons at 2026-03-12T10:51:39-04:00 Add a cumulative gc_sync_elapsed_ns counter to GHC.Internal.Stats This makes it possible to get an accurate view of time spent in sync phase when using prometheus-style sampling. Previously this was only available for the most recent GC. This intentionally leaves GHC.Stats API unchanged since it is marked as deprecated, and API changes there require CLC approval. Fixes #26944 - - - - - 66 changed files: - .gitlab-ci.yml - .gitlab/ci.sh - compiler/GHC/Driver/Main.hs - compiler/GHC/Driver/Pipeline.hs - compiler/GHC/Iface/Recomp.hs - compiler/GHC/Linker/Loader.hs - hadrian/bootstrap/generate_bootstrap_plans - hadrian/bootstrap/plan-9_10_1.json - hadrian/bootstrap/plan-9_10_2.json - hadrian/bootstrap/plan-9_10_3.json - hadrian/bootstrap/plan-9_12_1.json - hadrian/bootstrap/plan-9_12_2.json - + hadrian/bootstrap/plan-9_14_1.json - hadrian/bootstrap/plan-bootstrap-9_10_1.json - hadrian/bootstrap/plan-bootstrap-9_10_2.json - hadrian/bootstrap/plan-bootstrap-9_10_3.json - hadrian/bootstrap/plan-bootstrap-9_12_1.json - hadrian/bootstrap/plan-bootstrap-9_12_2.json - + hadrian/bootstrap/plan-bootstrap-9_14_1.json - hadrian/cabal.project - hadrian/src/Settings/Flavours/Development.hs - hadrian/src/Settings/Flavours/GhcInGhci.hs - hadrian/src/Settings/Flavours/Quick.hs - hadrian/src/Settings/Flavours/QuickCross.hs - hadrian/src/Settings/Flavours/Quickest.hs - libraries/base/src/GHC/Stats.hs - libraries/base/src/GHC/Weak.hs - libraries/base/src/GHC/Weak/Finalize.hs - − libraries/base/src/GHC/Weak/Finalizehs - libraries/base/src/System/Mem/Weak.hs - libraries/base/tests/IO/T17912.hs - libraries/base/tests/IO/all.T - libraries/ghc-internal/CHANGELOG.md - − libraries/ghc-internal/src/GHC/Internal/Conc/Sync.hs-boot - − libraries/ghc-internal/src/GHC/Internal/IO/Handle/Text.hs-boot - libraries/ghc-internal/src/GHC/Internal/Stats.hsc - libraries/ghc-internal/src/GHC/Internal/TopHandler.hs - libraries/ghc-internal/src/GHC/Internal/Weak.hs - libraries/ghc-internal/src/GHC/Internal/Weak/Finalize.hs - libraries/template-haskell/Language/Haskell/TH/Quote.hs - rts/Stats.c - rts/include/RtsAPI.h - testsuite/.gitignore - testsuite/tests/annotations/should_run/all.T - − testsuite/tests/driver/OneShotTH.stdout-javascript-unknown-ghcjs - + testsuite/tests/driver/T2057/Makefile - + testsuite/tests/driver/T2057/README.md - + testsuite/tests/driver/T2057/T2057.stderr - + testsuite/tests/driver/T2057/all.T - + testsuite/tests/driver/T2057/app/Main.hs - + testsuite/tests/driver/T2057/pkgA1/A.hs - + testsuite/tests/driver/T2057/pkgA1/pkg.conf - + testsuite/tests/driver/T2057/pkgA2/A.hs - + testsuite/tests/driver/T2057/pkgA2/pkg.conf - + testsuite/tests/driver/T2057/pkgB/B.hs - + testsuite/tests/driver/T2057/pkgB/pkg.conf - + testsuite/tests/driver/T20604/T20604.stdout-javascript-unknown-ghcjs - testsuite/tests/driver/T20604/all.T - testsuite/tests/driver/all.T - testsuite/tests/driver/fat-iface/fat010.stdout-javascript-unknown-ghcjs - testsuite/tests/driver/recomp011/all.T - testsuite/tests/driver/recompHash/recompHash.stdout-javascript-unknown-ghcjs - testsuite/tests/driver/recompNoTH/recompNoTH.stdout-javascript-unknown-ghcjs - − testsuite/tests/driver/th-new-test/th-new-test.stdout-javascript-unknown-ghcjs - testsuite/tests/interface-stability/ghc-experimental-exports.stdout - testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32 The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/6af6ba920c0d9786bfde6639ab6274… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/6af6ba920c0d9786bfde6639ab6274… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/manngoiv/release-trackign] release tracking: add a release tracking ticket
by Magnus (＠MangoIV) 12 Mar '26

12 Mar '26

Magnus pushed to branch wip/manngoiv/release-trackign at Glasgow Haskell Compiler / GHC Commits: d4cdfcbf by mangoiv at 2026-03-12T14:17:25+01:00 release tracking: add a release tracking ticket Adds a new template for release tracking ala #16816. The information has been brought up to date with https://gitlab.haskell.org/ghc/ghc-hq/-/blob/main/release-management.mkd Resolves #26691 - - - - - 1 changed file: - + .gitlab/issue_templates/release_tracking.md Changes: ===================================== .gitlab/issue_templates/release_tracking.md ===================================== @@ -0,0 +1,203 @@ + + +This is the release checklist for the **TODO milestone**. + + + +See the milestone for the planned release schedule, and other details. See [GHC HQ - Release Management](https://gitlab.haskell.org/ghc/ghc-hq/-/blob/main/release-manag… for release policies. + +This template is part of the ghc repository at `.gitlab/issue_templates/release_tracking.md`. + + +# Pre-fork checklist + + +When forking a new release branch for a new major release series (e.g. `ghc-9.14`), please check the following: + +* [ ] Add the release to the [status page](https://gitlab.haskell.org/ghc/ghc/-/wikis/GHC-Status), including a link to the milestone. +* [ ] Verify that the platform support documentation is up-to-date with reality: + * https://gitlab.haskell.org/ghc/ghc/-/wikis/platforms/windows + * https://gitlab.haskell.org/ghc/ghc/-/wikis/platforms/ +* [ ] Remove the release notes for the previous release (e.g. `docs/users_guide/8.6.*-notes.rst`) +* [ ] In `configure.ac` update `MinBootGhcVersion` to be the major version of the last supported bootstrap compiler. We currently guarantee bootstrapping with the last two major releases; therefore, when preparing, e.g., GHC `9.14` you should set `MinBootGhcVersion` to `9.10`. +* [ ] Create the new branch: `git branch ghc-9.14` +* [ ] In the new branch bump the version number in `configure.ac` to, e.g., `9.14` +* [ ] In `master` bump the version number in `configure.ac` to that of the next development series, e.g., `9.15` and ensure that `MinBootGhcVersion` is set correctly +* [ ] Verify that package versions have been bumped as necessary under PVP: + * [ ] `base` + * [ ] `template-haskell` + * [ ] `ghc-prim` +* [ ] Tag this `master` commit as, e.g., `ghc-9.14-start` +* [ ] Push all of the above tags and branches +* [ ] Create a new worksheet in the GHC submodule tracking spreadsheet (ask in `#ghc` for a link), populate the "current" and "desired" version columns, and send an email to submodule maintainers and `ghc-releases(a)haskell.org` asking them to notify us of their needs +* [ ] After forking, remove release notes from `master` and start a new set of release notes for the next release +* [ ] After forking, notify `ghc-releases(a)haskell.org` that fork has been made +* [ ] Create a weekly scheduled pipeline building the new branch to ensure that it does not bit-rot and bindists are persistently available + +# Pre-release checklist + +* [ ] Ensure that the Haddock (haddock-library, haddock-api) version numbers have been appropriately bumped. +* [ ] Ensure that submodules are on released tags (the below is produced using [this script](https://gitlab.haskell.org/bgamari/ghc-utils/blob/master/rel-eng/su…) + * [ ] `libraries/Cabal`: version *todo* + * [ ] `libraries/Win32`: version *todo* + * [ ] `libraries/array`: version *todo* + * [ ] `libraries/binary`: version *todo* + * [ ] `libraries/bytestring`: version *todo* + * [ ] `libraries/containers`: version *todo* + * [ ] `libraries/deepseq`: version *todo* + * [ ] `libraries/directory`: version *todo* + * [ ] `libraries/exceptions`: version *todo* + * [ ] `libraries/file-io`: version *todo* + * [ ] `libraries/filepath`: version *todo* + * [ ] `libraries/haskeline`: version *todo* + * [ ] `libraries/hpc`: version *todo* + * [ ] `libraries/libffi-clib`: version *todo* + * [ ] `libraries/mtl`: version *todo* + * [ ] `libraries/os-string`: version *todo* + * [ ] `libraries/parsec`: version *todo* + * [ ] `libraries/pretty`: version *todo* + * [ ] `libraries/process`: version *todo* + * [ ] `libraries/semaphore-compat`: version *todo* + * [ ] `libraries/stm`: version *todo* + * [ ] `libraries/template-haskell-lift`: version *todo* + * [ ] `libraries/template-haskell-quasiquoter`: version *todo* + * [ ] `libraries/terminfo`: version *todo* + * [ ] `libraries/text`: version *todo* + * [ ] `libraries/time`: version *todo* + * [ ] `libraries/transformers`: version *todo* + * [ ] `libraries/unix`: version *todo* + * [ ] `libraries/xhtml`: version *todo* + * [ ] `utils/hpc`: version *todo* + * [ ] `utils/hsc2hs`: version *todo* +* [ ] Announce the boot lib versions that are planned to be included in the next release on the + [Boot libraries maintainers mailing list](mailto:ghc-boot-libraries@haskell.org), then allow for appropriate amount of grace time + for boot library maintainers to include revisions. +* [ ] Ensure that all of the versions above are newer than the ones for older major releases and incorporate any patch updates +* [ ] Notify stakeholders of release progress, **including timeline, reason, what to look out for, platform tier changes, build platform changes, Bindist Changes** [^1]: + * [ ] [Julian Ospald](mailto:hasufell@posteo.de) + * [ ] [GHC releases](mailto:ghc-releases@haskell.org) + * [ ] [GHC developers](mailto:ghc-devs@haskell.org) + * [ ] [GHC users](mailto:glasgow-haskell-users@haskell.org) +* [ ] Non-released submodules up-to-date: + * [ ] `nofib` (upstream: ghc/nofib>) + * [ ] `libffi-tarballs` (upstream: ghc/libffi-tarballs>) + * [ ] `libraries/ghc-bignum/gmp/gmp-tarballs` (upstream: ghc/gmp-tarballs>) +* [ ] `LlvmMinVersion` and `LlvmMaxVersion` in `configure.ac` is targetting intended LLVM version +* [ ] `llvm-targets` file [updated](https://gitlab.haskell.org/ghc/ghc/wikis/making-releases#updating-… +* [ ] Release notes (`docs/users_guide/x.y.z-notes.rst`) written + * Release notes linked in `docs/users_guide/release-notes.rst` + * LLVM version requirement mentioned +* [ ] Remove "Included libraries" sections from old release notes +* [ ] `autoconf` scripts [updated](https://gitlab.haskell.org/ghc/ghc/wikis/making-releases#updating-… +* [ ] Check that Unicode database in `base` (`libraries/base/cbits/README.Unicode`) reflects current standard release (http://www.unicode.org/versions/latest/) +* [ ] Verify that the ~"backport needed" label has no more issues/merge requests needing backport +* [ ] Verify that all CI builds are green before moving to *release checklist* +* [ ] Update hadrian bootstrap plans for the latest compiler releases: + * Update `hadrian/bootstrap/generate_bootstrap_plans` to include any new compiler releases in the last two major release series + * Drop any plans that are outside of the bootstrap support window + * Run `hadrian/bootstrap/generate_bootstrap_plans` and commit the files that it generates + * Update `bootstrap_matrix` in `.gitlab-ci.yml` to reflect the most recent minor release in each major series supported by bootstrapping + +# Release candidate checklist + +* Announce on: + * [ ] [GHC developers](mailto:ghc-devs@haskell.org) + * [ ] [GHC releases](mailto:ghc-releases@haskell.org), + * [ ] [GHC users](mailto:glasgow-haskell-users@haskell.org) +* [ ] For minor releases: Ask stackage maintainers to test the release candidate. +* Give grace time + + +# Release checklist + +* [ ] Ensure that the [Migration](https://gitlab.haskell.org/ghc/ghc/wikis/migration/) page is up-to-date +* [ ] Push a provisional release commit to trigger the release builds using `git push -o ci.variable="RELEASE_JOB=yes"` +* [ ] Wait until builds finish; verify that they finished successfully +* [ ] Write down a link to the release pipeline here:  +* [ ] Fetch release artifacts: + ```bash + $ mkdir $VERSION + $ cd $VERSION + $ nix run $GHC/.gitlab/rel_eng#fetch-gitlab --pipeline $PIPELINE_ID --release $VERSION + ``` + where `GHC` is the path to a GHC source tree, `VERSION` is the version number, and `PIPELINE_ID` is the release pipeline id. +* [ ] Recompress release artifacts: `nix run $GHC/.gitlab/rel_eng#upload -- recompress` +* [ ] Generate hashes: `nix run $GHC/.gitlab/rel_eng#upload -- gen_hashes` +* [ ] Sign release artifacts: `nix run $GHC/.gitlab/rel_eng#upload -- sign` +* [ ] Upload to `downloads.haskell.org`: `nix run $GHC/.gitlab/rel_eng#upload -- upload` +* [ ] If most recent release: Update `latest` symlink: `nix run $GHC/.gitlab/rel_eng#upload -- set_symlink latest` +* [ ] Update `X.Y-latest` symlink: `nix run $GHC/.gitlab/rel_eng#upload -- set_symlink 9.8-latest` +* [ ] Purge CDN cache: `nix run $GHC/.gitlab/rel_eng#upload -- purge` +* [ ] Submit `ghcup` metadata upstream: + * Manually trigger the `ghcup-metadata-testing-release` job of the release pipeline + * Download the `metadata_test.yaml` artifact from the `ghcup-metadata-release` job of the release pipeline + * Clone [`ghcup-metadata`](https://github.com/haskell/ghcup-metadata/) + * Integrate the appropriate release section into `ghcup-metadata/ghcup-0.0.7.yaml` (or `ghcup-prerelease-0.0.7.yaml` for pre-releases) + * Replace the `&id<n>` identifiers with unique names + * Add the `Latest` (or `LatestPrerelease`) to the new release's `viTags` field + * Remove `Latest` for the previous release's `viTags` field; for pre-releases add the `Prerelease` tag) + * Add the `base-w.x.y.z` (e.g. `base-4.19.0.0`) tag to `viTags` + * Sign the resulting metadata YAML file with `gpg --detach-sign` + * Open a merge request submitting the metadata upstream + * Start a "Bindist installation" [workflow](https://github.com/haskell/ghcup-metadata/actions/workflows/bindi… +* [ ] [Make a release tag](https://gitlab.haskell.org/ghc/ghc/wikis/making-releases#tagging-the-r… +* [ ] Release/revise GHC-maintained libraries on Hackage using [this script](https://gitlab.haskell.org/ghc/ghc/-/blob/master/.gitlab/rel_eng/up…: + * [ ] `libraries/base` + * [ ] `libraries/ghc-prim` + * [ ] `libraries/array` + * [ ] `libraries/stm` + * [ ] `libraries/ghc-heap` + * [ ] `libraries/ghc-compact` + * [ ] `libraries/ghc-boot` + * [ ] `libraries/ghc-boot-th` + * [ ] `libraries/hpc` + * [ ] `libraries/libiserv` + * [ ] `libraries/template-haskell` + * [ ] `libraries/ghc-bignum` +* [ ] Update ghc/homepage>: + * [ ] Write download page (see ghc/homepage>) + * [ ] Make sure that the Signing Key is correct for the relevant release + * [ ] Add news item to [`index.html`](https://gitlab.haskell.org/ghc/homepage/blob/master/index.shtml) + * [ ] Add link to [`download.shtml`](https://gitlab.haskell.org/ghc/homepage/blob/master/download.shtml). Be sure to link to the Migration guide. + * [ ] Look over changes locally + * [ ] Add release announcement to [GHC blog](https://gitlab.haskell.org/ghc/homepage/tree/master/blog). Be sure to link to the Migration guide. + * [ ] Push changes to `master` +* [ ] Announce on: + * [ ] [GHC developers](mailto:ghc-devs@haskell.org) + * [ ] [GHC releases](mailto:ghc-releases@haskell.org), + * [ ] [Boot libraries maintainers](mailto:ghc-boot-libraries@haskell.org) + * [ ] [GHC users](mailto:glasgow-haskell-users@haskell.org) + * [ ] adjacent matrix channels: #haskell-releases:matrix.org, #GHC:matrix.org, #ghc-devs:matrix.org + * [ ] [Haskell Cafe](mailto:haskell-cafe@haskell.org) + * [ ] Mention sponsors + * [ ] Mention ghc / ghc-hq + * [ ] Link to release notes and migration guide +* [ ] Announce on: [Haskell Discourse](https://discourse.haskell.org/), [/r/haskell](https://reddit.com/r/haskell), [/m/haskell](https://kbin.social/m/haskell) +* [ ] When releasing the latest version, update `latest` symlink on `downloads.haskell.org`, e.g. `ln -sfT 9.6.3 latest` if 9.6 was the latest major series. + +# Post-release checklist + +* [ ] Update the Wiki [status page](https://gitlab.haskell.org/ghc/ghc/-/wikis/GHC-Status) +* [ ] Update the [language pragma history](https://gitlab.haskell.org/ghc/ghc/wikis/language-pragma-history) +* [ ] Mark milestone as *closed* +* [ ] Update `/topic` in `#ghc` +* [ ] Update the [VersionHistory](https://gitlab.haskell.org/ghc/ghc/wikis/commentary/librari… wiki page +* [ ] Set `RELEASE=NO` +* [ ] Create a release tracking ticket for the next release using the template in #16816 + +[^1]: Build platform changes are major changes to how GHC is being built from sources. + Bindist changes are significant changes to the toolchains, changes to the layout of the bindists or changes to the user facing installation procedure. + Platform tier changes are changes that move platforms up or down a tier or drop a given platform from the tierlist. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d4cdfcbfc45c34219b53eae78a8544e… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d4cdfcbfc45c34219b53eae78a8544e… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/manngoiv/release-trackign
by Magnus (＠MangoIV) 12 Mar '26

12 Mar '26

Magnus pushed new branch wip/manngoiv/release-trackign at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/manngoiv/release-trackign You're receiving this email because of your account on gitlab.haskell.org.

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