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Reflect musl/glibc correctly in meta.platforms for binary GHCs #212098

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Reflect musl/glibc correctly in meta.platforms for binary GHCs#212098
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0.kind: enhancementAdd something new or improve an existing system.2.status: stalehttps://github.com/NixOS/nixpkgs/blob/master/.github/STALE-BOT.md6.topic: haskellGeneral-purpose, statically typed, purely functional programming language6.topic: muslRunning or building packages with musl libc
@sternenseemann

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@sternenseemann
sternenseemann
opened on Jan 22, 2023

We should be able to leverage #195294 (which allows adding proper lib.platforms to the meta.platforms list to my understanding) in order to get rid of the following HACK:

nixpkgs/pkgs/development/compilers/ghc/9.2.4-binary.nix

Lines 423 to 433 in 0c9c29c

# HACK: since we can't encode the libc / abi in platforms, we need
# to make the platform list dependent on the evaluation platform
# in order to avoid eval errors with musl which supports less
# platforms than the default libcs (i. e. glibc / libSystem).
# This is done for the benefit of Hydra, so `packagePlatforms`
# won't return any platforms that would cause an evaluation
# failure for `pkgsMusl.haskell.compiler.ghc922Binary`, as
# long as the evaluator runs on a platform that supports
# `pkgsMusl`.
platforms = builtins.attrNames ghcBinDists.${distSetName};
hydraPlatforms = builtins.filter (p: minimal || p != "aarch64-linux") platforms;

cc @amjoseph-nixpkgs

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    0.kind: enhancementAdd something new or improve an existing system.2.status: stalehttps://github.com/NixOS/nixpkgs/blob/master/.github/STALE-BOT.md6.topic: haskellGeneral-purpose, statically typed, purely functional programming language6.topic: muslRunning or building packages with musl libc

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