{ projectConfig }:
{ lib, config, pkgs, haskellLib, ... }: {
  options = {
    name = lib.mkOption {
      type = lib.types.nullOr lib.types.str;
      default = null;
    };
    packages = lib.mkOption {
      type = lib.types.unspecified;
      default = ps: builtins.attrValues (haskellLib.selectLocalPackages ps);
    };
    components = lib.mkOption {
      type = lib.types.unspecified;
      default = ps: lib.concatMap haskellLib.getAllComponents (config.packages ps);
    };
    additional = lib.mkOption {
      type = lib.types.unspecified;
      default = _: [];
    };
    withHoogle = lib.mkOption {
      type = lib.types.bool;
      default = true;
    };
    withHaddock = lib.mkOption {
      type = lib.types.bool;
      default = config.withHoogle;
    };
    exactDeps = lib.mkOption {
      type = lib.types.bool;
      default = false;
    };
    allToolDeps = lib.mkOption {
      type = lib.types.bool;
      default = !config.exactDeps;
      description = ''
        Indicates if the shell should include all the tool dependencies
        of in the haskell packages in the project.  Defaulted to `false` in
        stack projects (to avoid trying to build the tools used by
        every `stackage` package).
      '';
    };
    tools = lib.mkOption {
      type = lib.types.attrsOf lib.types.unspecified;
      default = {};
    };
    packageSetupDeps = lib.mkOption {
      type = lib.types.unspecified;
      default = true;
    };
    enableDWARF = lib.mkOption {
      type = lib.types.unspecified;
      default = false;
    };
    crossPlatforms = lib.mkOption {
      type = lib.types.unspecified;
      default = projectConfig.crossPlatforms;
    };

    # mkShell args
    inputsFrom = lib.mkOption {
      type = lib.types.listOf lib.types.unspecified;
      default = [];
    };
    shellHook = lib.mkOption {
      type = lib.types.str;
      default = "";
    };

    # mkDerivation args
    buildInputs = lib.mkOption {
      type = lib.types.listOf lib.types.unspecified;
      default = [];
    };
    nativeBuildInputs = lib.mkOption {
      type = lib.types.listOf lib.types.unspecified;
      default = [];
    };
    passthru = lib.mkOption {
      type = lib.types.attrsOf lib.types.unspecified;
      default = {};
    };
  };
}