Re: [ANNOUNCE] GHC 9.2.1-rc1 now available

I mean GHC.Tuple, of course. On Sun, Aug 22, 2021, 8:14 PM David Feuer wrote:

One more question: is Solo exported from Data.Tuple yet, or do we still have to depend on ghc-prim and import it from GHC.Magic? It would be really nice to have that fixed by release, and it's so tiny.

On Sun, Aug 22, 2021, 6:01 PM Ben Gamari wrote:

...

Hi all,

The GHC developers are very happy to announce the availability of the release cadidate of the 9.2.1 release. Binary distributions, source distributions, and documentation are available at

https://downloads.haskell.org/ghc/9.2.1-rc1

GHC 9.2 will bring a number of exciting features including:

* A native code generation backend for AArch64, significantly speeding compilation time on ARM platforms like the Apple M1.

* Many changes in the area of records, including the new `RecordDotSyntax` and `NoFieldSelectors` language extensions, as well as Support for `DuplicateRecordFields` with `PatternSynonyms`.

* Introduction of the new `GHC2021` language extension set, giving users convenient access to a larger set of language extensions which have been long considered stable.

* Merge of `ghc-exactprint` into the GHC tree, providing infrastructure for source-to-source program rewriting out-of-the-box.

* Introduction of a `BoxedRep` `RuntimeRep`, allowing for polymorphism over levity of boxed objects (#17526)

* Implementation of the `UnliftedDataTypes` extension, allowing users to define types which do not admit lazy evaluation ([proposal])

* The new [-hi profiling] mechanism which provides significantly improved insight into thunk leaks.

* Support for the `ghc-debug` out-of-process heap inspection library [ghc-debug]

* Support for profiling of pinned objects with the cost-centre profiler (#7275)

* Introduction of Haddock documentation support in TemplateHaskell (#5467)

Finally, thank you to Microsoft Research, GitHub, IOHK, the Zw3rk stake pool, Tweag I/O, Serokell, Equinix, SimSpace, and other anonymous contributors whose on-going financial and in-kind support has facilitated GHC maintenance and release management over the years. Moreover, 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

[apple-m1]: https://www.haskell.org/ghc/blog/20210309-apple-m1-story.html [proposal]: https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0265-un... [-hi https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0265-un... profiling]: https://well-typed.com/blog/2021/01/first-look-at-hi-profiling-mode/ [ghc-debug https://well-typed.com/blog/2021/01/first-look-at-hi-profiling-mode/%5Bghc-d...]: http://ghc.gitlab.haskell.org/ghc-debug/ [ticket]: https://gitlab.haskell.org/ghc/ghc/-/issues/new

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