{config, pkgs, ...}:
{
   services.logind.settings.Login = {
     HandleLidSwitch = "ignore";
     HandleLidSwitchDocked = "ignore";
     HandleLidSwitchExternalPower = "ignore";

     HandlePowerKey = "ignore";
     HandleRebootKey = "ignore";
     HandleSuspendKey = "ignore";
     HandleHibernateKey = "ignore";
   };

  systemd.services.foo = {
    enable = true;
    script = ''
    echo "0" > /sys/class/backlight/nv_backlight/brightness
    '';
    wantedBy = [ "multi-user.target" ];
    serviceConfig = {
      Restart = "on-failure";
      RestartSec = "3";
    };
  };
}