nixpkgs.config.allowBroken = true should be set as linear-generics build is broken in the upstream.
I think this is unnoticed because a local machine had that setting globally.
$ cd categorifier
direnv: loading ~/repo/src/categorifier/.envrc
direnv: using flake
error: Package ‘linear-generics-0.2’ in /nix/store/3g25cg20m43hvsy17d7nz0jxwk79a77w-source/pkgs/development/haskell-modules/hackage-packages.nix:168150 is marked as broken, refusing to evaluate.
nixpkgs.config.allowBroken = true
should be set aslinear-generics
build is broken in the upstream. I think this is unnoticed because a local machine had that setting globally.