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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.org148 Servers

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7 Sep 2025
@emilazy:matrix.orgemilyunless you just accept the bootstrap chain getting longer and longer forever21:31:30
@emilazy:matrix.orgemilywhich has big issues itself21:31:36
@alex:tunstall.xyzAlexPotentially, yes, which is mostly why I'd rather not.21:31:38
@emilazy:matrix.orgemilye.g. it messes up easy bootstrap of new architectures21:31:46
@emilazy:matrix.orgemilysince now you have to backport codegen to every version21:31:59
@alex:tunstall.xyzAlexDefinitely trying to keep the chain as short as possible, but there is always unregisterised GHC if absolutely necessary.21:32:34
@emilazy:matrix.orgemilyyeah21:32:58
@emilazy:matrix.orgemilyhave you talked with Lennart about this?21:33:14
@emilazy:matrix.orgemilyit would certainly be cool to see21:33:19
@emilazy:matrix.orgemilydid you have to patch it for Hugs support?21:33:28
@emilazy:matrix.orgemilyif you could get bootstrap via Hugs upstreamed to MicroHs and ensure that Hugs builds okay with modern C compilers, then I wonder what it would take to Hugs -> MicroHs + MicroCabal added as an option for the Nixpkgs Haskell package set. (where presumably very little would work, but it would at least be tantalizing incentive to working on closing the gap between that and GHC)21:36:12
@maralorn:maralorn.demaralorn

What are my old and tired eyes seeing?

┃        > Encountered missing or private dependencies:
┃        >     cabal-add >=0.1 && <0.2 (installed: 0.2)

Look at the installed. I have been wishing for that feature for years and have been procrastinating to implement it basically the same time.

21:36:26
@maralorn:maralorn.demaralornThis is amazing.21:37:05

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