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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/143 Servers

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17 Dec 2025
@josh:quadrivium.ukdutchienot sure how rigorously the policy is to stick to the Stackage set08:39:35
@sternenseemann:systemli.orgsterniwe don’t enforce stackage constraints for non default package sets since it isn’t possible really anyways08:41:43
@sternenseemann:systemli.orgsterni it’s questionable whether it should be constrained so rigorously anyways in stackage 08:42:13
@sternenseemann:systemli.orgsterniunicode data db updates shouldn’t really break a well designed program?!08:42:37
@ncfavier:matrix.orgncfavierIs there a way to override the version of Cabal used to build Setup.hs? lhs2tex needs Cabal 3.10, but using the obvious override doesn't work (I suspect because Cabal 3.12 is bundled with GHC and it picks the latest available version). I also found https://github.com/NixOS/nixpkgs/pull/443130 but that doesn't seem to help here.13:32:29
@alex:tunstall.xyzAlex I recall it being possible but difficult to override boot packages.
Was it maralorn who knew how to do it?
14:21:55

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