feat: transition from Hyprland to GNOME desktop environment

- Updated Bellerophon configuration to include GNOME desktop settings and packages.
- Added GNOME-specific packages and extensions for enhanced user experience.
- Introduced scripts for display management tailored for ZenBook Duo under GNOME.
- Implemented systemd services for automatic display management and backlight control.
- Integrated UWSM for improved session management in Hyprland.
- Enhanced lid monitoring and USB display management scripts for ZenBook Duo.
- Configured keyring support for GNOME and integrated it with PAM.
- Updated display manager settings to enable GDM for GNOME sessions.

hosts/common/optional/gnome.nix

@@ -23,7 +23,6 @@
   ];
 
   environment.systemPackages = with pkgs; [
-    gnomeExtensions.appindicator
     gsettings-desktop-schemas
   ];
 }

hosts/common/optional/greetd.nix

@@ -9,6 +9,22 @@
     };
   };
 
+  # Enable the GNOME Keyring daemon system-wide
+  services.gnome.gnome-keyring.enable = true;
+
+  # Enable GNOME Keyring support in PAM
+  security.pam.services.greetd.enableGnomeKeyring = true;
+  security.pam.services.login.enableGnomeKeyring = true;
+
+  # Ensure gnome-keyring daemon runs for user sessions
+  systemd.user.services.gnome-keyring = {
+    wantedBy = ["default.target"];
+    serviceConfig = {
+      ExecStart = "${pkgs.gnome-keyring}/bin/gnome-keyring-daemon --start --foreground --components=pkcs11,secrets,ssh";
+      Restart = "on-abort";
+    };
+  };
+
   # Disable conflicting getty services on tty1
   systemd.services."getty@tty1".enable = false;
   systemd.services."autovt@tty1".enable = false;

hosts/common/optional/hyprland.nix

@@ -14,5 +14,17 @@
     portalPackage = pkgs.xdg-desktop-portal-hyprland;
   };
 
+  # Enable UWSM for better Wayland session management
+  programs.uwsm = {
+    enable = true;
+    waylandCompositors = {
+      hyprland = {
+        prettyName = "Hyprland";
+        comment = "Hyprland Wayland compositor";
+        binPath = "/run/current-system/sw/bin/Hyprland";
+      };
+    };
+  };
+
   environment.sessionVariables.NIXOS_OZONE_WL = "1";
 }

hosts/common/optional/sddm.nix

@@ -1,10 +1,10 @@
 # NOTE(starter): This is just a basic enabling of the XFCE windows manager for simplicity
 {
-services.displayManager = {
+  services.displayManager = {
     sddm.enable = true;
     sddm.wayland = {
       enable = true;
       compositor = "kwin";
     };
-};
+  };
 }

hosts/nixos/Bellerophon/default.nix

@@ -74,8 +74,8 @@
       "hosts/common/optional/services/docker.nix"
       "hosts/common/optional/services/tailscale.nix"
       "hosts/common/optional/audio.nix" # pipewire and cli controls
-      "hosts/common/optional/hyprland.nix"
-      "hosts/common/optional/greetd.nix"
+      "hosts/common/optional/gnome.nix"
+      "hosts/common/optional/gdm.nix"
       "hosts/common/optional/flatpak.nix"
       "hosts/common/optional/thermal-management.nix"