nix-darwin/modules/system/defaults/controlcenter.nix

{ config, lib, ... }:

{
  options = {

    system.defaults.controlcenter.BatteryShowPercentage = lib.mkOption {
        type = lib.types.nullOr lib.types.bool;
        default = null; 
        description = ''
            Apple menu > System Preferences > Control Center > Battery

            Show a battery percentage in menu bar. Default is null.
        '';
    };

    system.defaults.controlcenter.Sound = lib.mkOption {
        type = lib.types.nullOr lib.types.bool;
        apply = v: if v == null then null else if v == true then 18 else 24;
        default = null; 
        description = ''
            Apple menu > System Preferences > Control Center > Sound

            Show a sound control in menu bar . Default is null.

            18 = Display icon in menu bar
            24 = Hide icon in menu bar
        '';
    };

    system.defaults.controlcenter.Bluetooth = lib.mkOption {
        type = lib.types.nullOr lib.types.bool;
        apply = v: if v == null then null else if v == true then 18 else 24;
        default = null; 
        description = ''
            Apple menu > System Preferences > Control Center > Bluetooth

            Show a bluetooth control in menu bar. Default is null.

            18 = Display icon in menu bar
            24 = Hide icon in menu bar
        '';
    };

    system.defaults.controlcenter.AirDrop = lib.mkOption {
        type = lib.types.nullOr lib.types.bool;
        apply = v: if v == null then null else if v == true then 18 else 24;
        default = null; 
        description = ''
            Apple menu > System Preferences > Control Center > AirDrop

            Show a AirDrop control in menu bar. Default is null.

            18 = Display icon in menu bar
            24 = Hide icon in menu bar
        '';
    };

    system.defaults.controlcenter.Display = lib.mkOption {
        type = lib.types.nullOr lib.types.bool;
        apply = v: if v == null then null else if v == true then 18 else 24;
        default = null; 
        description = ''
            Apple menu > System Preferences > Control Center > Display

            Show a Screen Brightness control in menu bar. Default is null.

            18 = Display icon in menu bar
            24 = Hide icon in menu bar
        '';
    };

    system.defaults.controlcenter.FocusModes = lib.mkOption {
        type = lib.types.nullOr lib.types.bool;
        apply = v: if v == null then null else if v == true then 18 else 24;
        default = null; 
        description = ''
            Apple menu > System Preferences > Control Center > Focus

            Show a Focus control in menu bar. Default is null.

            18 = Display icon in menu bar
            24 = Hide icon in menu bar
        '';
    };

    system.defaults.controlcenter.NowPlaying = lib.mkOption {
        type = lib.types.nullOr lib.types.bool;
        apply = v: if v == null then null else if v == true then 18 else 24;
        default = null; 
        description = ''
            Apple menu > System Preferences > Control Center > Now Playing

            Show a Now Playing control in menu bar. Default is null.

            18 = Display icon in menu bar
            24 = Hide icon in menu bar
        '';
    };
  };
}