{ lib, options, ... }:

{
  config = lib.foldr lib.recursiveUpdate {} ([
    {
      i18n = {
        defaultLocale = "en_DK.UTF-8";
      };
      console.keyMap = lib.mkDefault "dvorak-programmer";
      time.timeZone = lib.mkDefault "Europe/Berlin";
    }
  ] ++ (lib.optional (options ? i18n.extraLocales) {
    i18n.extraLocales = [ "C.UTF-8/UTF-8" "en_US.UTF-8/UTF-8" ];
  }) ++ (lib.optional (!(options ? i18n.extraLocales)) {
    i18n.supportedLocales = [ "C.UTF-8/UTF-8" "en_US.UTF-8/UTF-8" ];
  }));
}