{
  config,
  pkgs,
  lib,
  ...
}: let
  cfg = config.programs.elvish;
in {
  options.programs.elvish = {
    enable = lib.mkEnableOption "elvish";
  };

  config = lib.mkIf cfg.enable {
    home = {
      packages = with pkgs; [elvish];

      file.".elvish/nix.elv".source = let
        elvish-modules = pkgs.fetchFromGitHub {
          owner = "zzamboni";
          repo = "elvish-modules";
          rev = "9005c970346ab06214b3cd3ed3e70f04f3c632ba";
          hash = "sha256-/Dwtl12QzPvMoMMGoj+v3dwX2ZwFT8t/bohVy1zDE0c=";
        };
      in
        builtins.toPath "${elvish-modules}/nix.elv";
      # /${builtins.toPath elvish-modules.outPath}/nix.elv;
    };
  };
}