fix(vm): restore Plymouth splash and fix SDDM session selection

- Restore 'quiet' and 'splash' to kernel parameters to enable Plymouth.
- Re-enable graphics and virtio drivers for VM configurations.
- Add Interface=Qt5 to SDDM theme metadata for proper loading.
- Set default autoLogin.session to hyprland-uwsm to ensure correct session start.
- Enable services.xserver for improved display manager compatibility.

assets/sddm/nomarchy/metadata.desktop

@@ -3,4 +3,5 @@ Name=Nomarchy
 Description=Minimal terminal-style login theme matching the Limine bootloader aesthetic
 Author=Nomarchy
 Type=sddm-theme
+Interface=Qt5
 Version=1.0

flake.nix

@@ -94,8 +94,8 @@
             # Use a dummy hardware config for VM
             fileSystems."/" = { device = "/dev/disk/by-label/nixos"; };
             boot.loader.grub.device = "/dev/vda";
-            boot.initrd.availableKernelModules = [ "virtio_pci" "virtio_blk" "virtio_gpu" ];
-            boot.kernelParams = nixpkgs.lib.mkForce [ "video=1280x800" "splash" "boot.shell_on_fail" ];
+            boot.initrd.availableKernelModules = [ "virtio_pci" "virtio_blk" "virtio_gpu" "virtio_net" "virtio_mmio" ];
+            boot.kernelParams = nixpkgs.lib.mkForce [ "video=1280x800" "quiet" "splash" "boot.shell_on_fail" ];
 
             # Ensure the user has the right groups for graphical environment
             users.users.nixos = {
@@ -129,8 +129,8 @@
             # Use a dummy hardware config for VM
             fileSystems."/" = { device = "/dev/disk/by-label/nixos"; };
             boot.loader.grub.device = "/dev/vda";
-            boot.initrd.availableKernelModules = [ "virtio_pci" "virtio_blk" "virtio_gpu" ];
-            boot.kernelParams = nixpkgs.lib.mkForce [ "video=1280x800" "splash" "boot.shell_on_fail" ];
+            boot.initrd.availableKernelModules = [ "virtio_pci" "virtio_blk" "virtio_gpu" "virtio_net" "virtio_mmio" ];
+            boot.kernelParams = nixpkgs.lib.mkForce [ "video=1280x800" "quiet" "splash" "boot.shell_on_fail" ];
 
             # Setup default user for testing
             users.users.nomarchy = {

modules/system/sddm.nix

@@ -12,6 +12,7 @@ let
   };
 in
 {
+  services.xserver.enable = true;
   services.displayManager.sddm = {
     enable = true;
     wayland.enable = true;
@@ -21,6 +22,7 @@ in
   services.displayManager.autoLogin = {
     enable = lib.mkDefault true;
     user = lib.mkDefault "nomarchy";
+    session = lib.mkDefault "hyprland-uwsm";
   };
 
   environment.systemPackages = [ nomarchy-sddm-theme ];