{
lib,
flake-parts-lib,
...
}:
let
  inherit (lib) mkOption mkEnableOption types;
  inherit (flake-parts-lib) mkPerSystemOption;
in {
  # imports = [
  #   ./qmk.nix
  # ];

  options.perSystem = mkPerSystemOption ({ pkgs, system, config, ... }: {
    # options.firmware = mkOption {
    #   default = {};
    #   type = types.submodule {
    #     options = {

    options.devices = mkOption {
      default = {};
      type = types.lazyAttrsOf <| types.submoduleWith {
        shorthandOnlyDefinesConfig = true;
        modules = [
          ({ name, ... }: {
            _module.args = {
              inherit pkgs lib flake-parts-lib;
            };
            options = {
              enable = mkEnableOption name // { default = true; };
              firmware.type = mkOption {
                type = types.enum [ ];
                description = ''
                Firmware type. Extensible for other firmwares.
                '';
              };

              build = {
                flash = mkOption {
                  type = types.package;
                  description = ''
                      Flash script
                  '';
                };

              };
            };
          })

          ./qmk
        ];
      };

    };

    # config._type = "submodule";
    # };
    #   };
    # };

    config = {
      packages = config.devices |> lib.filterAttrs (_: v: v.enable) |> builtins.mapAttrs (_: v: v.build.flash);
    };
  });
}