{ lib, ... }:
with lib;
with lib.types;
{
  _file = "haskell.nix/modules/project-common.nix";
  options = {
    # Used by callCabalProjectToNix and callStackToNix
    name = mkOption {
      type = nullOr str;
      default = "haskell-project"; # TODO figure out why `config.src.name or null` breaks hix;
      description = "Optional name for better error messages";
    };
    src = mkOption {
      type = either path package;
    };
    # Default shell arguments
    shell = mkOption {
      # TODO make this a submodule
      type = unspecified;
      default = {};
      description = ''
        Arguments to use for the default shell `p.shell` (these are passed to p.shellFor).
        For instance to include `cabal` and `ghcjs` support use
          shell = { tools.cabal = {}; crossPlatforms = p: [ p.ghcjs ]; }
      '';
    };
  };
}