{ options, host, lib, ... }: { networking = { hostName = "${host}"; networkmanager.enable = true; useNetworkd = true; timeServers = options.networking.timeServers.default ++ ["pool.ntp.org"]; firewall = { enable = lib.mkDefault false; }; }; services.tailscale = { enable = true; useRoutingFeatures = "client"; }; }