{ ... }: {

    flake.nixosModules.default = { config, lib, ... }: {

        options = {
            sysconfig.services.avahi.enable = lib.options.mkOption {
                type = lib.types.bool;
                default = false;
            };
        };

        config = lib.mkIf config.sysconfig.services.avahi.enable {

            services.avahi = {

                enable = true;
                ipv4 = true;
                ipv6 = true;
                openFirewall = true;
                nssmdns4 = true;
                wideArea = true;

            };   
        };
    };
}