I am pleased to announce the arrival of ghc version 9 (9.2.6) and Haskell packages based on Stackage LTS 20 versions in Rawhide and F38 <https://bodhi.fedoraproject.org/updates/FEDORA-2023-7a3a4921e3>.
This landed in f38 and f39 today for https://fedoraproject.org/wiki/Changes/Haskell_GHC_9.2_and_Stackage_20. With ghc 9.2 there are some significant performance improvements particularly for aarch64 (with its new Native Code Generator compilation times are now on par with Intel arch's) and also s390x gains a llvm backend, which also improves build times a lot. (ppc64le is now the slowest ghc arch in current Fedora). Also Haskell packages' modules are now built in parallel in Koji for further build speed ups. There are still a small handful of packages which didn't build yet, which I will be sorting in the next days (the only significant ones are the gi-gtk and dhall stacks). If you see any problems please let me know or open a bug. Jens
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