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Haskell in Nixpkgs/NixOS

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For discussions and questions about Haskell with Nix, cabal2nix and haskellPackages in nixpkgs | Current Docs: https://haskell4nix.readthedocs.io/ | More Nix: #community:nixos.org | More Haskell: #haskell-space:matrix.org146 Servers

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7 Sep 2025
@alex:tunstall.xyzAlex
In reply to @emilazy:matrix.org
well AIUI the upstream build system either compiles the C blob or uses GHC right?
Not necessarily: https://github.com/augustss/MicroHs?tab=readme-ov-file#bootstrapping-with-hugs
(I also delete the C blobs to be extra sure I don't accidentally use them.)
21:45:29
@emilazy:matrix.orgemilyah. but that's a separate branch of MicroHs?21:46:21
@emilazy:matrix.orgemilyseems like it'd be ideal for it to be merged with the main one but I guess worst case it's just another hop21:46:43
@alex:tunstall.xyzAlex Yes, it's another hop, but the MicroHs build is under 5min anyway, so I'm not concerned.
It's a good idea to build a stage 2 mhs anyway.
21:53:37
@emilazy:matrix.orgemilyI do worry a bit about the part where he says the resulting binaries are 10x slower than GHC.21:55:36

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