{ ... }:

{
  i18n.defaultLocale = "eo";
  i18n.extraLocaleSettings.LC_ADDRESS = "de_DE.UTF-8";
  i18n.extraLocaleSettings.LC_CTYPE = "de_DE.UTF-8";
  i18n.extraLocaleSettings.LC_NAME = "en_GB.UTF-8";

  # Like Germany, but uses thin spaces as thousands separators.
  i18n.extraLocaleSettings.LC_MONETARY = "fr_FR.UTF-8";
  i18n.extraLocaleSettings.LC_NUMERIC = "fr_FR.UTF-8";
}