- ghc-releases - Haskell.org

[ANNOUNCE] GHC 9.10.1-alpha1 is now available
by Ben Gamari 15 Mar '24

15 Mar '24

The GHC developers are very pleased to announce the availability of the first alpha release of GHC 9.10.1. Binary distributions, source distributions, and documentation are available at https://downloads.haskell.org/ghc/9.10.1-alpha1 We hope to have this release available via ghcup shortly. GHC 9.10 will bring a number of new features and improvements, including: * The introduction of the GHC2024 language edition, building upon GHC2021 with the addition of a number of widely-used extensions. * Partial implementation of the [GHC Proposal #281], allowing visible quantification to be used in the types of terms. * Extension of LinearTypes to allow linear `let` and `where` bindings ([linear-let]) * The implementation of the exception backtrace proposal, allowing the annotation of exceptions with backtraces, as well as other user-defined context [exception backtrace] * Further improvements in the info table provenance mechanism, reducing code size to allow IPE information to be enabled more widely * Javascript FFI support in the WebAssembly backend * Improvements in the fragmentation characteristics of the low-latency non-moving garbage collector. * ... and many more A full accounting of changes can be found in the [release notes]. As always, GHC's release status, including planned future releases, can be found on the GHC Wiki [status]. Many will notice that this release comes a fair bit later than the previously-announced schedule. While this delay has been attributable to a variety factors, the most recent cause is a set of issues with GHC 9.10's binary distributions on Windows (#24542). Instead of continuing to hold up the release process while we sort out this situation, we have instead provided this alpha without the usual assortment of Windows binary distributions. We expect to have this resolved by alpha 2; apologies to eager Windows testers for this delay. We would like to thank GitHub, IOG, the Zw3rk stake pool, Well-Typed, Tweag I/O, Serokell, Equinix, SimSpace, the Haskell Foundation, and other anonymous contributors whose on-going financial and in-kind support has facilitated GHC maintenance and release management over the years. Finally, this release would not have been possible without the hundreds of open-source contributors whose work comprise this release. As always, do give this release a try and open a [ticket] if you see anything amiss. Happy compiling, ~ Ben [release notes]: https://downloads.haskell.org/ghc/9.10.1-alpha1/docs/users_guide/9.10.1-not… [status]: https://gitlab.haskell.org/ghc/ghc/-/wikis/GHC-status [exception backtrace]: https://github.com/ghc-proposals/ghc-proposals/pull/330 [GHC Proposal #281]: https://github.com/ghc-proposals/ghc-proposals/pull/281 [linear let]: https://github.com/ghc-proposals/ghc-proposals/pull/624

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GHC 9.10.1 alpha 1 delay
by Ben Gamari 29 Feb '24

29 Feb '24

Hi all, Unfortunately due to persistent trouble merging the last few patches destined for 9.10.1-alpha1 I will need to delay the release by a few days. As I will be away for the first two days of next week I will be delaying by one week, placing the new alpha 1 release date on 7 March 2024. Cheers, - Ben

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GHC 9.10 release schedule and core library status
by Ben Gamari 23 Feb '24

23 Feb '24

Hi all, First, apologies for the silence regarding the 9.10 fork; I was hoping to improve our communications with boot library authors in the run-up to GHC 9.10 but illness unfortunately took me largely out of commission for a first few weeks of the year. Happily, things are looking rosier now. Having had a chance to look at the 9.10 branch and the release goals, I am planning to cut the fork for GHC 9.10 around a month from today, on 23 Februrary 2024. This leaves around a month of time to merge the `ghc-internals` split and a few of the other bits of work that remain outstanding. We anticipate the first alpha release will come a week after the fork (see the Milestone [1] for further details). How does this sound to you? For organizational purposes, it would be helpful if we designated a coordinating maintainer for each of our boot packagers for the 9.10 release. My understanding is that our boot libraries have the following primary maintainers but don't hesitate to let me know if you believe this to be incorrect: | Package | Maintainer | | --------------- | -------------------------- | | Cabal | Mikolaj Konarski | | Win32 | Tamar Christina | | array | (orphaned) | | binary | Lennart Kolmodin? | | bytestring | Andrew Lelechanko | | containers | David Feuer | | deepseq | Melanie Phoenix | | directory | Phil Rufflewind | | exceptions | Ryan Scott | | filepath | Julian Ospald | | haddock | Hecate | | haskeline | Judah Jacobson | | hpc | David Binder | | mtl | Emily Pillmore | | parsec | Oleg Grenrus | | process | Michael Snoyman | | stm | Simon Marlow | | terminfo | Judah Jacobson | | text | Andrew Lelechanko | | time | Ashley Yakeley | | transformers | Ross Paterson | | unix | Julian Ospald | It would be great if each maintainer could let me know what they would like to do for the 9.10 release. In general we would love to have the set of boot libraries pinned down at least in version by the second alpha, which we are planning for the second week of March 2024. Does this sound reasonable? As always, I would encourage core library maintainers to be conservative in their plans for a GHC release and avoid introducing major features or refactorings in their release. Such changes both add risk to the release schedule and complicate the users' migration paths; consequently, they are ideally best held for releases asynchronous to the GHC release process. Thanks again for all of your work! Cheers, - Ben [1] https://gitlab.haskell.org/ghc/ghc/-/milestones/380#tab-issues

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[ANNOUNCE] GHC 9.8.1 is now available
by Ben Gamari 09 Oct '23

09 Oct '23

The GHC developers are very pleased to announce the availability of the final release of GHC 9.8.1. Binary distributions, source distributions, and documentation are available at downloads.haskell.org: https://downloads.haskell.org/ghc/9.8.1 GHC 9.8 brings a number of new features and improvements, including: * Preliminary support the `TypeAbstractions` language extension, allowing types to be bound in type declarations [TypeAbstractions]. * Support for the `ExtendedLiterals` extension, providing syntax for non-word-sized numeric literals in the surface language [extended-literals] * Improved rewrite rule matching behavior, allowing limited matching of higher-order patterns * Better support for user-defined warnings by way of the `WARNING` pragma [warnings] * The introduction of the new `GHC.TypeError.Unsatisfiable` constraint, allowing more predictable user-defined type errors [unsatisfiable] * Implementation of the export deprecation proposal, allowing module exports to be marked with `DEPRECATE` pragmas [deprecated-exports] * The addition of build semaphore support for parallel compilation; with coming support in `cabal-install` this will allow better use of parallelism in multi-package builds [jsem] * More efficient representation of info table provenance information, reducing binary sizes by over 50% in some cases when `-finfo-table-map` is in use A full accounting of changes can be found in the [release notes][]. Plans for GHC's future releases can be found on the [GHC Wiki][status]. We would like to thank GitHub, IOG, the Zw3rk stake pool, Well-Typed, Tweag I/O, Serokell, Equinix, SimSpace, the Haskell Foundation, and other anonymous contributors whose on-going financial and in-kind support has facilitated GHC maintenance and release management over the years. Finally, this release would not have been possible without the hundreds of open-source contributors whose work comprise this release. Happy compiling, ~ Ben [TypeAbstractions]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0425-d… [extended-literals]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0451-s… [unsatisfiable]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0433-u… [warnings]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0541-w… [deprecated-exports]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0134-d… [jsem]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0540-j… [release notes]: https://downloads.haskell.org/ghc/9.8.1/docs/users_guide/9.8.1-notes.html [status]: https://gitlab.haskell.org/ghc/ghc/-/wikis/GHC-status

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[ANNOUNCE] GHC 9.8.1-rc1 is now available
by Ben Gamari 29 Sep '23

29 Sep '23

The GHC developers are very pleased to announce the availability of the release candidate of GHC 9.8.1. Binary distributions, source distributions, and documentation are available at https://downloads.haskell.org/ghc/9.8.1-rc1 GHC 9.8 will bring a number of new features and improvements, including: * Preliminary support the `TypeAbstractions` language extension, allowing types to be bound in type declarations [TypeAbstractions]. * Support for the `ExtendedLiterals` extension, providing syntax for non-word-sized numeric literals in the surface language [extended-literals] * Improved rewrite rule matching behavior, allowing limited matching of higher-order patterns * Better support for user-defined warnings by way of the `WARNING` pragma [warnings] * The introduction of the new `GHC.TypeError.Unsatisfiable` constraint, allowing more predictable user-defined type errors [unsatisfiable] * Implementation of the export deprecation proposal, allowing module exports to be marked with `DEPRECATE` pragmas [deprecated-exports] * The addition of build semaphore support for parallel compilation; with coming support in `cabal-install` this will allow better use of parallelism in multi-package builds [jsem] * More efficient representation of info table provenance information, reducing binary sizes by over 50% in some cases when `-finfo-table-map` is in use A full accounting of changes can be found in the [release notes]. This candidate includes roughly 20 new commits relative to alpha 4, including what we believe should be nearly the last changes to GHC's boot libraries. As always, GHC's release status can be found on the GHC Wiki [status]. We would like to thank GitHub, IOG, the Zw3rk stake pool, Well-Typed, Tweag I/O, Serokell, Equinix, SimSpace, the Haskell Foundation, and other anonymous contributors whose on-going financial and in-kind support has facilitated GHC maintenance and release management over the years. Finally, this release would not have been possible without the hundreds of open-source contributors whose work comprise this release. As always, do give this release a try and open a [ticket] if you see anything amiss. Happy compiling, ~ Ben [TypeAbstractions]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0425-d… [extended-literals]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0451-s… [unsatisfiable]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0433-u… [warnings]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0541-w… [deprecated-exports]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0134-d… [jsem]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0540-j… [release notes]: https://downloads.haskell.org/ghc/9.8.1-alpha4/docs/users_guide/9.8.1-notes… [status]: https://gitlab.haskell.org/ghc/ghc/-/wikis/GHC-status

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GHC 9.8.1-rc1 delayed
by Ben Gamari 29 Sep '23

29 Sep '23

Hi all, Due to a rather late-breaking boot library mix-up I will need to delay the 9.8.1 release candidate by at least two days. I will provide a more specific timeline tomorrow when there is more clarity on what needs to happen to resolve the situation. Cheers, - Ben

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