updated quickshell

modules/hardware/nvidia.nix

@@ -22,4 +22,13 @@
         nvidiaSettings = true;
         package = config.boot.kernelPackages.nvidiaPackages.stable;
     };
+
+    # NVIDIA-specific session variables live here so machines without
+    # NVIDIA GPUs (which do not import this module) stay vendor-clean.
+    environment.sessionVariables = {
+        LIBVA_DRIVER_NAME = "nvidia";
+        GBM_BACKEND = "nvidia-drm";
+        __GLX_VENDOR_LIBRARY_NAME = "nvidia";
+        NVD_BACKEND = "direct";
+    };
 }