machine_setup/nix/configuration/roles/launch_keyboard/default.nix

{
  config,
  lib,
  pkgs,
  ...
}:

{
  imports = [ ];

  options.me = {
    launch_keyboard.enable = lib.mkOption {
      type = lib.types.bool;
      default = false;
      example = true;
      description = "Whether we want to install launch_keyboard.";
    };
  };

  config = lib.mkIf config.me.launch_keyboard.enable (
    lib.mkMerge [
      (lib.mkIf config.me.graphical {
        environment.systemPackages = with pkgs; [
          system76-keyboard-configurator
          dfu-programmer # For flashing keyboard https://support.system76.com/articles/launch_2-firmware-update/
          avrdude # For flashing keyboard https://support.system76.com/articles/launch_2-firmware-update/
          lxqt.lxqt-policykit # Need a polkit agent to launch the keyboard configurator
        ];

        systemd = {
          user.services.lxqt-policykit-agent = {
            description = "lxqt-policykit-agent";
            wantedBy = [ "graphical-session.target" ];
            wants = [ "graphical-session.target" ];
            after = [ "graphical-session.target" ];
            serviceConfig = {
              Type = "simple";
              ExecStart = "${pkgs.lxqt.lxqt-policykit}/bin/lxqt-policykit-agent";
              Restart = "on-failure";
              RestartSec = 1;
              TimeoutStopSec = 10;
            };
          };
        };
      })
    ]
  );
}