os/modules/printing/default.nix

{
  flake,
  config,
  pkgs,
  lib,
  ...
}: {
  services.avahi.enable = true;
  services.avahi.ipv6 = true;
  services.avahi.nssmdns4 = true;
  services.avahi.publish.enable = true;
  services.avahi.publish.userServices = true;

  services.printing.enable = true;
  services.printing.browsing = true;
  services.printing.listenAddresses = ["localhost:631"];
  services.printing.defaultShared = lib.mkDefault false;

  services.printing.drivers = [
    pkgs.gutenprint
  ] ++ (if (pkgs.system == "x86_64-linux")
  then [ pkgs.cups-brother-hl3140cw ]
  else []);

  environment.persistence."/persist" = {
    directories = [
      "/var/lib/cups"
    ];
  };
}