{
  sources ? import ./nix/sources.nix,
  pkgs ?
    import sources.nixpkgs {
      overlays = map import [
        ./nix/overlays/disko.nix
        ./nix/packages/overlay.nix
      ];
    },
}: rec {
  default = pkgs.mkShell {
    packages = with pkgs; [
      just
      jq
      npins
      disko
    ];
  };

  withXMonad = pkgs.mkShell {
    inputsFrom = [
      default
    ];
    packages = with pkgs; [
      (haskellPackages.ghcWithPackages (self: [
        self.xmonad-contrib
        self.xmonad-extras
      ]))
      haskell-language-server
      cabal-install
    ];
  };
}