How to specify Haskell project in subfolder of flake root?

[malteneuss]

I would like to use haskell-flake on NixOS, because it looks way easier to setup than the other Nix integrations; i have a project where the cabal file (and the rest of the Haskell project) is in a subfolder and i can't find a haskell-flake attribute to declare that. Is such a setup possible?

[srid]

You just create a cabal.project file with packages option https://github.com/srid/haskell-multi-nix/blob/master/cabal.project