diff --git a/flake.nix b/flake.nix
index 216dc4a..b929a80 100644
--- a/flake.nix
+++ b/flake.nix
@@ -73,50 +73,50 @@
                 description = "Whether to use Nginx to proxy requests.";
               };
             };
-            config = lib.mkIf cfg.enable {
-              users.groups."${backendName}-group" = { };
-              users.users."${backendName}-user" = {
-                isSystemUser = true;
-                group = "${backendName}-group";
-              };
+            # config = lib.mkIf cfg.enable {
+            #   users.groups."${backendName}-group" = { };
+            #   users.users."${backendName}-user" = {
+            #     isSystemUser = true;
+            #     group = "${backendName}-group";
+            #   };
 
-              systemd.services.${backendName} =
-                let serverHost = if cfg.useNginx then "localhost" else cfg.host;
-                in {
-                  description = "Exercise app ${backendName}";
-                  wantedBy = [ "multi-user.target" ];
-                  after = [ "network.target" ];
-                  startLimitIntervalSec = 30;
-                  startLimitBurst = 10;
-                  serviceConfig = {
-                    ExecStart =
-                      "${pkgs.jdk}/bin/java -jar ${backendPackage}/bin/${backendName}.jar -p ${
-                        toString cfg.port
-                      } --host ${serverHost}";
-                    WorkingDirectory = "${backendPackage}/bin";
-                    Restart = "on-failure";
-                    User = "${backendName}-user";
-                    Group = "${backendName}-group";
-                  };
-                };
-              # this is only backend. Front end still configured and installed separately.
-              services.nginx.virtualHosts.${cfg.host}.locations."/api" = {
-                proxyPass = "http://127.0.0.1:${toString cfg.port}";
-                # this is config for websocket
-                extraConfig = ''
-                  rewrite ^/api/(.*)$ /$1 break;
-                  proxy_set_header Host $host;
-                  proxy_set_header X-Real-IP $remote_addr;
-                  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-                  proxy_set_header X-Forwarded-Proto $scheme;
+            #   systemd.services.${backendName} =
+            #     let serverHost = if cfg.useNginx then "localhost" else cfg.host;
+            #     in {
+            #       description = "Exercise app ${backendName}";
+            #       wantedBy = [ "multi-user.target" ];
+            #       after = [ "network.target" ];
+            #       startLimitIntervalSec = 30;
+            #       startLimitBurst = 10;
+            #       serviceConfig = {
+            #         ExecStart =
+            #           "${pkgs.jdk}/bin/java -jar ${backendPackage}/bin/${backendName}.jar -p ${
+            #             toString cfg.port
+            #           } --host ${serverHost}";
+            #         WorkingDirectory = "${backendPackage}/bin";
+            #         Restart = "on-failure";
+            #         User = "${backendName}-user";
+            #         Group = "${backendName}-group";
+            #       };
+            #     };
+            #   # this is only backend. Front end still configured and installed separately.
+            #   services.nginx.virtualHosts.${cfg.host}.locations."/api" = {
+            #     proxyPass = "http://127.0.0.1:${toString cfg.port}";
+            #     # this is config for websocket
+            #     extraConfig = ''
+            #       rewrite ^/api/(.*)$ /$1 break;
+            #       proxy_set_header Host $host;
+            #       proxy_set_header X-Real-IP $remote_addr;
+            #       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            #       proxy_set_header X-Forwarded-Proto $scheme;
 
-                  # Add the following lines for WebSocket support
-                  proxy_http_version 1.1;
-                  proxy_set_header Upgrade $http_upgrade;
-                  proxy_set_header Connection "upgrade";
-                '';
-              };
-            };
+            #       # Add the following lines for WebSocket support
+            #       proxy_http_version 1.1;
+            #       proxy_set_header Upgrade $http_upgrade;
+            #       proxy_set_header Connection "upgrade";
+            #     '';
+            #   };
+            # };
           };
       });
   # see https://serokell.io/blog/practical-nix-flakes