anchor.diff:    config = mkIf cfg.enable {
       environment.systemPackages = [ pkgs.glusterfs ];
   
  -    services.rpcbind.enable = true;
  +    services.rpcbind.enable = cfg.useRpcbind;
   
       environment.etc = mkIf (cfg.tlsSettings != null) {
         "ssl/glusterfs.pem".source = cfg.tlsSettings.tlsPem;
  
positive.code:         type = types.enum ["DEBUG" "INFO" "WARNING" "ERROR" "CRITICAL" "TRACE" "NONE"];
          description = "Log level used by the GlusterFS daemon";
          default = "INFO";
        };
  
        extraFlags = mkOption {
  
negative.code: 
        wantedBy = [ "multi-user.target" ];
  
        requires = lib.optional cfg.useRpcbind "rpcbind.service";
        after = [ "network.target" "local-fs.target" ] ++ lib.optional cfg.useRpcbind [ "rpcbind.service" ];
  
        preStart = ''
          install -m 0755 -d /var/log/glusterfs
  