refactor(gui): replace GNOME remote desktop with XRDP

- Switched from GNOME remote desktop to XRDP for remote access services across configurations.
- Removed GNOME-specific settings and added XRDP service settings in GUI and system modules.
- Enhances flexibility and aligns remote desktop service configuration.

flake.lock

@@ -585,11 +585,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1757244434,
-        "narHash": "sha256-AeqTqY0Y95K1Fgs6wuT1LafBNcmKxcOkWnm4alD9pqM=",
+        "lastModified": 1757408970,
+        "narHash": "sha256-aSgK4BLNFFGvDTNKPeB28lVXYqVn8RdyXDNAvgGq+k0=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "092c565d333be1e17b4779ac22104338941d913f",
+        "rev": "d179d77c139e0a3f5c416477f7747e9d6b7ec315",
         "type": "github"
       },
       "original": {
@@ -801,11 +801,11 @@
     },
     "unstable": {
       "locked": {
-        "lastModified": 1757068644,
-        "narHash": "sha256-NOrUtIhTkIIumj1E/Rsv1J37Yi3xGStISEo8tZm3KW4=",
+        "lastModified": 1757487488,
+        "narHash": "sha256-zwE/e7CuPJUWKdvvTCB7iunV4E/+G0lKfv4kk/5Izdg=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "8eb28adfa3dc4de28e792e3bf49fcf9007ca8ac9",
+        "rev": "ab0f3607a6c7486ea22229b92ed2d355f1482ee0",
         "type": "github"
       },
       "original": {

modules/nixos/services/gui/default.nix

@@ -167,6 +167,7 @@ in
         yubikey-personalization
         zellij
         jetbrains-toolbox
+        gnome-remote-desktop
       ]
       ++ lib.optionals pkgs.stdenv.targetPlatform.isx86_64 (
         with pkgs;
@@ -206,10 +207,8 @@ in
     };
 
     # remote desktop
-    networking.firewall.allowedTCPPorts = [ 3389 ];
-    services.gnome.gnome-remote-desktop.enable = true;
-    systemd.services.gnome-remote-desktop = {
-      wantedBy = [ "graphical.target" ];
-    };
+    services.xrdp.enable = true;
+    services.xrdp.defaultWindowManager = "${pkgs.gnome-session}/bin/gnome-session";
+    services.xrdp.openFirewall = true;
   };
 }

systems/aarch64-linux/m4nix/default.nix

@@ -34,10 +34,6 @@ with lib.metacfg;
     ];
   };
 
-  services.xrdp.enable = true;
-  services.xrdp.defaultWindowManager = "${pkgs.gnome-session}/bin/gnome-session";
-  services.xrdp.openFirewall = true;
-
   # Disable the GNOME3/GDM auto-suspend feature that cannot be disabled in GUI!
   # If no user is logged in, the machine will power down after 20 minutes.
   systemd.targets.sleep.enable = false;

systems/aarch64-linux/rnix/default.nix

@@ -34,10 +34,6 @@ with lib.metacfg;
     ];
   };
 
-  services.xrdp.enable = true;
-  services.xrdp.defaultWindowManager = "${pkgs.gnome-session}/bin/gnome-session";
-  services.xrdp.openFirewall = true;
-
   # Disable the GNOME3/GDM auto-suspend feature that cannot be disabled in GUI!
   # If no user is logged in, the machine will power down after 20 minutes.
   systemd.targets.sleep.enable = false;