nixos-config/profiles/workspace/light.nix

{ config, pkgs, lib, ... }: {
  programs.light.enable = config.deviceSpecific.isLaptop;
  services.actkbd = {
    enable = config.deviceSpecific.isLaptop;
    bindings = map (x:
      x // {
        events = [ "key" ];
        attributes = [ "exec" ];
      }) [
        {
          keys = [ 225 ];
          command = "${pkgs.light}/bin/light -A 10";
        }
        {
          keys = [ 224 ];
          command = "${pkgs.light}/bin/light -U 10";
        }
        {
          keys = [ 431 ];
          command = toString (pkgs.writeTextFile {
            name = "dark-script";
            text = ''
              if [[ `${pkgs.light}/bin/light` -eq 0 ]]
              then
                ${pkgs.light}/bin/light -I
              else
                ${pkgs.light}/bin/light -O
                ${pkgs.light}/bin/light -S 0
              fi'';
            executable = true;
          });
        }
      ];
  };
}