{
  lib,
  pkgs,
  ...
}: let
  mkPackage = name: v: {
    ${name} = pkgs.callPackage ./${name} {};
  };

  rmNotPackage = name: value:
    value
    == "directory"
    && builtins.pathExists ./${name}/default.nix;

  packages = lib.attrsets.filterAttrs rmNotPackage (builtins.readDir ./.);

  pkgSet = lib.attrsets.concatMapAttrs mkPackage packages;
in {
  imports = [
    {
      options.customPkgs = lib.mkOption {
        type = lib.types.attrs;
      };
    }
  ];

  customPkgs = pkgSet;
}