The haskell template uses IFD
The haskell template uses "callCabal2nix" which in turn uses IFD which is forbidden in flakes by default for a good reason.
This issue has been mentioned on NixOS Discourse. There might be relevant details there:
https://discourse.nixos.org/t/nix-flake-show-on-a-haskell-flake/18114/2
This issue has been mentioned on NixOS Discourse. There might be relevant details there:
https://discourse.nixos.org/t/another-simple-flake-for-haskell-development/18164/5
Is there a good alternative to building nix flake based Haskell projects without IFD?
For me haskell-hello does not work at all: https://github.com/NixOS/templates/issues/54 thank you.