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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://nixos.org/manual/nixpkgs/unstable/#haskell | Current PR: https://github.com/nixos/nixpkgs/pulls?q=is%3Apr+is%3Aopen+head%3Ahaskell-updates | Maintainer Docs: https://github.com/NixOS/nixpkgs/blob/haskell-updates/pkgs/development/haskell-modules/HACKING.md | More Nix: #community:nixos.org | More Haskell: #haskell-space:matrix.org | Merger Schedule: https://cloud.maralorn.de/apps/calendar/p/H6migHmKX7xHoTFa/dayGridMonth/now | Join #haskell.nix:libera.chat for question about the alternative haskell.nix infrastructure133 Servers

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27 Aug 2025
@toonn:matrix.orgtoonn For development without the goal of packaging for Nixpkgs, I'd recommend simply using Cabal or Stack as you would on any other system. 13:52:43
@thibaut:fsl.shThibautThanks. I understand now 👍️13:52:45
@thibaut:fsl.shThibautI just use the dhall tools so it's fine for me13:53:01
28 Aug 2025
@bglgwyng:matrix.orgbglgwyng It seems haskell.nix doesn't handle private repository in cabal.project(repository ... stanza) correctly 06:22:32
@bglgwyng:matrix.orgbglgwyngIt tries to download the package while building which leads the build to failure06:23:00
@bglgwyng:matrix.orgbglgwyng* It tries to download packages from the private repository while building which leads the build to failure06:23:15
@maralorn:maralorn.demaralorn bglgwyng: The haskell.nix maintainers don’t follow this channel very actively I think. 08:27:12
@maralorn:maralorn.demaralorn alexfmpe: FYI: https://github.com/NixOS/nixpkgs/pull/429810/commits/faa6bed4eda2a1aa2d8e7501f4bdc9e3d8b3a8f9 08:27:33

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