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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/148 Servers

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14 Aug 2025
@artem.types:matrix.orgArtem chreekat: although I don't see it in any of the latest LTSs per GHC versions (I checked for GHC 9.10 and 9.8) 15:45:30
@artem.types:matrix.orgArtemare you saying I should use "default-package-overrides" instead of "extra-packages" for a package outside of LTS? (I'm sorry for being slow!)15:46:38
@artem.types:matrix.orgArtem

modulo the extension .sh, that started doing something but failed with:

Running hackage2nix to regenerate pkgs/development/haskell-modules/hackage-packages.nix …
 .Regenerating transitive-broken.yaml … (pass --fast to /home/artem/nixpkgs/maintainers/scripts/haskell/regenerate-hackage-packages.sh to skip this step)
these 4 paths will be fetched (0.31 MiB download, 1.14 MiB unpacked):
  /nix/store/mmi8dxjdsv8r9jxnyd3dqwqakxda1796-jq-1.8.1
  /nix/store/kwxm52f2g9ap890pfj2j4ryzq2gj2i69-jq-1.8.1-bin
  /nix/store/h0xayyfsl9f17bss0x1xhhz7c3n5fq43-jq-1.8.1-dev
  /nix/store/1q3rqjv37glfxsmqcyvnz3ghqj1wjw4a-oniguruma-6.9.10-lib
copying path '/nix/store/1q3rqjv37glfxsmqcyvnz3ghqj1wjw4a-oniguruma-6.9.10-lib' from 'https://cache.nixos.org'...
copying path '/nix/store/mmi8dxjdsv8r9jxnyd3dqwqakxda1796-jq-1.8.1' from 'https://cache.nixos.org'...
copying path '/nix/store/kwxm52f2g9ap890pfj2j4ryzq2gj2i69-jq-1.8.1-bin' from 'https://cache.nixos.org'...
copying path '/nix/store/h0xayyfsl9f17bss0x1xhhz7c3n5fq43-jq-1.8.1-dev' from 'https://cache.nixos.org'...
error: access to absolute path '/home/artem/.local' is forbidden in restricted mode

15:53:55
@artem.types:matrix.orgArtemI'll have to get back to this. In the meantime, I'm submit a PR unbreaking liquid-fixpoint at least: https://github.com/NixOS/nixpkgs/pull/433722 let me know if it's horribly formatted and against the guidelines...16:10:30
@b:chreekat.netchreekatLooks like it's under "grandfathered dependencies", so probably needs a new champion . https://github.com/commercialhaskell/stackage/blob/master/build-constraints.yaml#L565716:10:43
@sternenseemann:systemli.orgsterni (he/him) Artem: may be https://github.com/NixOS/nixpkgs/issues/400784, try running with --fast 16:34:07

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