nixos/services/syncthing/default.nix

{lib, ...}: {
  services.syncthing = {
    enable = true;
    systemService = true;
    openDefaultPorts = true;
    extraOptions = {
      options = {
        globalAnnounceEnabled = lib.mkDefault false;
        localAnnounceEnabled = lib.mkDefault true;
      };
    };
  };
}