{ config, lib, ... }: {
  config = {
    services.displayManager.sddm = lib.mkIf config.services.displayManager.sddm.wayland.enable {
      settings.General.GreeterEnvironment = (
        lib.concatStringsSep " " (
          let
            localeConf = config.i18n.extraLocaleSettings;
          in
            builtins.map
              (name: "${name}=${localeConf.${name}}")
              (builtins.attrNames localeConf)));
    };
  };
}