[Haskell-cafe] [ANNOUNCE] GHC 9.6.6 is now available

Zubin Duggal zubin at well-typed.com
Mon Jul 1 09:39:14 UTC 2024

The GHC developers are happy to announce the availability of GHC 9.6.6. Binary
distributions, source distributions, and documentation are available on the
[release page](https://www.haskell.org/ghc/download_ghc_9_6_6.html).

Blog Post: https://www.haskell.org/ghc/blog/20240701-ghc-9.6.6-released.html

This release is primarily a bugfix release addressing some issues
found in the 9.6 series. These include:

* A fix for a bug in the NCG that could lead to incorrect runtime results due to
   erroneously removing a jump instruction (#24507).
* A fix for a linker error that manifested on certain platform/toolchain combinations,
   particularly darwin with a brew provisioned toolchain, arising due to a confusion
   in linker options between GHC and cabal (#22210).
* A fix for a compiler panic in the simplifier due to incorrect eta expansion (#24718).
* A fix for possible segfaults when using the bytecode interpreter due to incorrect
   constructor tagging (#24870).
* And a few more fixes

A full accounting of changes can be found in the [release notes]. As
some of the fixed issues do affect correctness users are encouraged to
upgrade promptly.

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 Hacking!


[ticket]: https://gitlab.haskell.org/ghc/ghc/-/issues/new
[release notes]: https://downloads.haskell.org/~ghc/9.6.6/docs/users_guide/9.6.6-notes.html
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