Re: [ANNOUNCE] GHC 9.4.1 is now available

Hello,
Thanks for this new release !
Do you plan to add FreeBSD binaries ?
Bruno

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> On Sunday, Aug 07, 2022 at 11:29 PM, Ben Gamari <[email protected] (mailto:[email protected])> wrote:
> The GHC developers are very pleased to announce the availability of GHC
> 9.4.1. Binary distributions, source distributions, and documentation are
> available at downloads.haskell.org:
>
> https://downloads.haskell.org/ghc/9.4.1
>
> This release includes:
>
> - A new profiling mode, `-fprof-late`, which adds automatic cost-center
> annotations to all top-level functions *after* Core optimisation has
> run. This provides informative profiles while interfering
> significantly less with GHC's aggressive optimisations, making it
> easier to understand the performance of programs which depend upon
> simplification..
>
> - A variety of plugin improvements including the introduction of a new
> plugin type, *defaulting plugins*, and the ability for typechecking
> plugins to rewrite type-families.
>
> - An improved constructed product result analysis, allowing unboxing of
> nested structures, and a new boxity analysis, leading to less reboxing.
>
> - Introduction of a tag-check elision optimisation, bringing
> significant performance improvements in strict programs.
>
> - Generalisation of a variety of primitive types to be levity
> polymorphic. Consequently, the `ArrayArray#` type can at long last be
> retired, replaced by standard `Array#`.
>
> - Introduction of the `\cases` syntax from [GHC proposal 0302].
>
> - A complete overhaul of GHC's Windows support. This includes a
> migration to a fully Clang-based C toolchain, a deep refactoring of
> the linker, and many fixes in WinIO.
>
> - Support for multiple home packages, significantly improving support
> in IDEs and other tools for multi-package projects.
>
> - A refactoring of GHC's error message infrastructure, allowing GHC to
> provide diagnostic information to downstream consumers as structured
> data, greatly easing IDE support.
>
> - Significant compile-time improvements to runtime and memory consumption.
>
> - On overhaul of our packaging infrastructure, allowing full
> traceability of release artifacts and more reliable binary
> distributions.
>
> - Reintroduction of deep subsumption (which was previously dropped with the
> *simplified subsumption* change) as a language extension.
>
> - ... and much more. See the [release notes] for a full accounting.
>
> Note that, as 9.4.1 is the first release for which the released artifacts will
> all be generated by our Hadrian build system, it is possible that there will be
> packaging issues. If you enounter trouble while using a binary distribution,
> please open a [ticket]. Likewise, if you are a downstream packager, do consider
> migrating to [Hadrian] to run your build; the Hadrian build system can be built
> using `cabal-install`, `stack`, or the in-tree [bootstrap script]. See the accompanying
> [blog post] for details on migrating packaging to Hadrian.
>
> We would like to thank Microsoft Azure, GitHub, IOG, the Zw3rk stake pool,
> Well-Typed, Tweag I/O, Serokell, Equinix, SimSpace, 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 testing,
>
> - Ben
>
>
> [GHC proposal 0302]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0302-cases.rst
> [ticket]: https://gitlab.haskell.org/ghc/ghc/-/issues/new
> [bootstrap script]: https://gitlab.haskell.org/ghc/ghc/-/blob/e2520df3fffa0cf22fb19c5fb872832d11c07d35/hadrian/bootstrap/README.md
> [Hadrian]: https://gitlab.haskell.org/ghc/ghc/-/blob/e2520df3fffa0cf22fb19c5fb872832d11c07d35/hadrian
> [release notes]: https://downloads.haskell.org/~ghc/9.4.1/docs/users_guide/9.4.1-notes.html
> [blog post]: https://www.haskell.org/ghc/blog/20220805-make-to-hadrian.html
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