{ options, config, lib, pkgs, ... }: with lib; with lib.custom; let cfg = config.modules.services.calibre; in { options.modules.services.calibre = { enable = mkBoolOpt false; }; config = mkIf cfg.enable { services.calibre-server.enable = true; networking.firewall.allowedTCPPorts = [ 8080 ]; }; }