{ config, lib, pkgs, ... }: with lib; let cfg = config.my.services.printing; in { options.my.services.printing.enable = mkEnableOption "printing"; config = lib.mkIf cfg.enable { services = { printing = { enable = true; drivers = with pkgs; [ epson-escpr2 ]; }; avahi = { enable = true; nssmdns4 = true; }; }; }; }