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June 2026

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2 discussions

GHC 9.12.5 RC2 is now available
by Magnus Viernickel 24 Jun '26

24 Jun '26

Dear GHC users, distributors and devs, I'm pleased to announce that the second release candidate for GHC 9.12.5 is now available from downloads.haskell.org and on GHCup. GHC 9.12.5 is a bug fix release. For a long form announcement, check out https://discourse.haskell.org/t/ghc-9-12-5-rc2-is-now-available/14313/1. Mind that the very important overhaul of the semaphore-compat library to v2 is included in this release and that the semaphore feature will only start working with cabal-install 3.18 again, which is sadly a breaking but necessary change. Your testing of the release is much appreciated. Many thanks to the nixpkgs and stackage package set distributors for testing the first release candidate. If you find any issues with the candidate, please open an issue on the ghc issue tracker. If there are no critical regressions are discovered within this release candidate, it will be published in about 2 weeks of time (the week of 8 July 2026). Best Magnus

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GHC Status Report 2026
by Andreas Klebinger 02 Jun '26

02 Jun '26

Hello devs, I'm currently in the process of preparing the Status report (to be given at Zurihac/HIW). If you you have a feature that made it into GHC during the last year or something big you are working on you think we should highlight during the talk let me know. I will go through the release notes to look for things but it would be a shame if something slips through the cracks! Andreas

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