# Pastebin nOx7VfQj
  services.actkbd = {
    enable = true;
    bindings = [

      # Lower Brightness
      { keys = [ 224 ]; events = [ "key" ]; command = "/run/current-system/sw/bin/light -U 5"; }

      # Increase Brightness
      { keys = [ 225 ]; events = [ "key" ]; command = "/run/current-system/sw/bin/light -A 5"; }

      # "Mute" media key
      { keys = [ 113 ]; events = [ "key" ]; command = "/run/current-system/sw/bin/pactl set-sink-mute 0 toggle"; }

      # "Lower Volume" media key
      { keys = [ 114 ]; events = [ "key" "rep" ]; command = "/run/current-system/sw/bin/pactl set-sink-volume 0 +3%"; }

      # "Raise Volume" media key
      { keys = [ 115 ]; events = [ "key" "rep" ]; command = "/run/current-system/sw/bin/pactl set-sink-volume 0 +3%"; }

    ];
  };