ok too many changes

system/modules/hardware/graphics/nvidia/default.nix

@@ -4,6 +4,19 @@
   lib,
   ...
 }: let
+  vulkanDriverFiles = [
+    "${config.hardware.nvidia.package}/share/vulkan/icd.d/nvidia_icd.x86_64.json"
+    "${config.hardware.nvidia.package.lib32}/share/vulkan/icd.d/nvidia_icd.i686.json"
+  ];
+  nvidia-offload = pkgs.writeShellScriptBin "nvidia-offload" ''
+    export __NV_PRIME_RENDER_OFFLOAD=1
+    export __NV_PRIME_RENDER_OFFLOAD_PROVIDER=NVIDIA-G0
+    export __GLX_VENDOR_LIBRARY_NAME=nvidia
+    export __VK_LAYER_NV_optimus=NVIDIA_only
+    export VK_DRIVER_FILES="${builtins.concatStringsSep ":" vulkanDriverFiles}"
+    exec "$@"
+  '';
+
   inherit (lib) types mkIf mkEnableOption mkOption;
   cfg = config.modules.hardware.graphics.nvidia;
 in {
@@ -29,7 +42,12 @@ in {
           libvdpau-va-gl
           intel-media-driver
           nvidia-vaapi-driver
-          egl-wayland
+          nvidia-offload
+          vulkan-tools
+        ];
+        extraPackages32 = with pkgs.pkgsi686Linux; [
+          vaapiVdpau
+          libvdpau-va-gl
         ];
       };
       nvidia = {
@@ -42,7 +60,7 @@ in {
           enable = false;
           finegrained = false;
         };
-        open = false;
+        open = true;
         nvidiaSettings = true;
       };
     };