{ lib, config, ... }:
  let
    inherit (lib)
      mkOption
      types
    ;

    cfg = config.i18n;
  in {
    options = {
      i18n = {
        localeSettings = mkOption {
          type = types.attrsOf types.str;
          description = "The system wide locale settings";
          default = {};
        };

        locales = mkOption {
          type = types.listOf types.str;
          description = "The locales of the system";
        };
      };
    };

    config = {
      i18n.locales = builtins.attrValues cfg.localeSettings;
    };
  }