{inputs, pkgs, ...}:
{
  services.hypridle = {
    enable = true;
    settings = {
      general = {
        # avoid starting multiple hyprlock instances.
        before_sleep_cmd = "pidof hyprlock || hyprlock --immediate-render --no-fade-in";
        lock_cmd = "pidof hyprlock || hyprlock --immediate-render --no-fade-in";
        after_sleep_cmd = "hyprctl dispatch dpms on";
        ignore_dbus_inhibit = false;
      };

      listener = [
        {
          # turn off keyboard backlight after 20 seconds
          timeout = 10;
          on-timeout = "brightnessctl -d platform::kbd_backlight -s set 0";
          # restore keyboard backlight on resume to previous level.
          on-resume = "brightnessctl -d platform::kbd_backlight -r";
        }
        {
          # dim screen after 2 minutes
          timeout = 120;
          on-timeout = "brightnessctl -s set 2";
          on-resume = "brightnessctl -r";
          # monitor backlight restore.
        }
        {
          # lock screen after 10 minutes
          timeout = 600;
          on-timeout = "loginctl lock-session && hyprctl dispatch dpms off";
          on-resume = "hyprctl dispatch dpms on";
        }
        {
          # suspend after 15 minutes
          timeout = 900;
          on-timeout = "systemctl suspend";
          on-resume = "hyprctl dispatch dpms on";
        }
      ];
    };

  };
}