GHC 9.12.1 is now available

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Subject: GHC 9.12.1 is now available
MIME-Version: 1.0

The GHC developers are very pleased to announce the release of GHC 9.12.1.
Binary distributions, source distributions, and documentation are available=
 at
[downloads.haskell.org][].
 =20
We hope to have this release available via ghcup shortly.
 =20
GHC 9.12 will bring a number of new features and improvements, including:
 =20
  * The new language extension [OrPatterns] allowing you to combine multiple
    pattern clauses into one.
 =20
  * The [MultilineStrings] language extension to allow you to more easily w=
rite
    strings spanning multiple lines in your source code.
 =20
  * Improvements to the OverloadedRecordDot extension, allowing the built-in
    `HasField` class to be used for records with fields of non lifted repre=
sentations.
 =20
  * The [NamedDefaults] language extension has been introduced allowing you=
 to
    define defaults for typeclasses other than `Num`.
 =20
  * More deterministic object code output, controlled by the `-fobject-dete=
rminism`
    flag, which improves determinism of builds a lot (though does not fully=
 do so)
    at the cost of some compiler performance (1-2%). See #12935 for the det=
ails
 =20
  * GHC now accepts type syntax in expressions as part of [GHC Proposal #28=
1].
 =20
  * The WASM backend now has support for TemplateHaskell.
 =20
  * Experimental support for the RISC-V platform with the native code gener=
ator.
 =20
  * ... and many more
 =20
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][].
 =20
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.
 =20
As always, do give this release a try and open a [ticket][] if you see
anything amiss.
 =20
 =20
[release notes]: https://downloads.haskell.org/ghc/9.12.1/docs/users_guide/=
9.12.1-notes.html
[status]: https://gitlab.haskell.org/ghc/ghc/-/wikis/GHC-status
[downloads.haskell.org]: https://downloads.haskell.org/ghc/9.12.1
[ticket]: https://gitlab.haskell.org/ghc/ghc/-/issues/new
[OrPatterns]: https://github.com/ghc-proposals/ghc-proposals/blob/master/pr=
oposals/0522-or-patterns.rst
[MultilineStrings]: https://github.com/ghc-proposals/ghc-proposals/blob/mas=
ter/proposals/0569-multiline-strings.rst
[GHC Proposal #281]: https://github.com/ghc-proposals/ghc-proposals/blob/ma=
ster/proposals/0281-visible-forall.rst
[NamedDefaults]: https://github.com/ghc-proposals/ghc-proposals/blob/master=
/proposals/0409-exportable-named-default.rst

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