[Haskell-cafe] [ANNOUNCE] GHC 9.8.1-alpha2 is now available

[Arnaud Spiwack]

Thanks Ben.

For the sake of the future announcements, the first item should have
s/TypeApplications/TypeApplications/


On Thu, 10 Aug 2023 at 17:09, Ben Gamari <ben at well-typed.com> wrote:

>
> The GHC developers are very pleased to announce the availability of the
> second alpha prerelease of GHC 9.8.1. Binary distributions, source
> distributions, and documentation are available at
>
>                https://downloads.haskell.org/ghc/9.8.1-alpha2
>
> GHC 9.8 will bring a number of new features and improvements, including:
>
>  * Preliminary support the `TypeApplications` language extension
> [type-binders],
>    allowing types to be bound in type declarations.
>
>  * 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 alpha includes around two dozen bug-fixes relative to alpha 1.
>
> 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
>
>
> [type-binders]:
> https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0425-decl-invis-binders.rst
> [extended-literals
> <https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0425-decl-invis-binders.rst%5Bextended-literals>]:
>
> https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0451-sized-literals.rst
> [unsatisfiable]:
> https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0433-unsatisfiable.rst
> [warnings]:
> https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0541-warning-pragmas-with-categories.rst
> [deprecated-exports
> <https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0541-warning-pragmas-with-categories.rst%5Bdeprecated-exports>]:
>
> https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0134-deprecating-exports-proposal.rst
> [jsem]:
> https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0540-jsem.rst
> [release notes]:
> https://downloads.haskell.org/ghc/9.8.1-alpha2/docs/users_guide/9.8.1-notes.html
> [ticket]: https://gitlab.haskell.org/ghc/ghc/-/issues/new
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-- 
Arnaud Spiwack
Director, Research at https://moduscreate.com and https://tweag.io.
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