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{ config, lib, ... }: with lib; let cfg = config.nixfiles.modules.endlessh; in { options.nixfiles.modules.endlessh.enable = mkEnableOption "endlessh"; config = let port = 22; in mkIf cfg.enable { services.endlessh = { enable = true; inherit port; extraOptions = ["-v" "-4"]; }; networking.firewall.allowedTCPPorts = [port]; }; }