systemd.user.services.numlockx = {
    Unit = {
      Description = "Set numlock to on during X11 session";
      After = [ "graphical-session-pre.target" ];
      PartOf = [ "graphical-session.target" ];
    };

    Service = {
      Type = "oneshot";
      ExecStart = "${pkgs.numlockx}/bin/numlockx";
      IOSchedulingClass = "idle";
    };

    Install = {
      WantedBy = [ "graphical-session.target" ];
    };
  };