refactor: move nvidia specific settings into its own file

modules/nvidia.nix

@@ -0,0 +1,38 @@
+{ pkgs, config, inputs, ... }:
+let
+  hyprland-pkgs = inputs.hyprland.inputs.nixpkgs.legacyPackages.${pkgs.stdenv.hostPlatform.system};
+in
+{
+  hardware = {
+    graphics = {
+      enable = true;
+      package = hyprland-pkgs.mesa.drivers;
+      extraPackages = with pkgs; [
+        nvidia-vaapi-driver
+        ocl-icd
+        cudaPackages.cudatoolkit
+      ];
+    };
+    nvidia = {
+      open = true;
+      package = config.boot.kernelPackages.nvidiaPackages.latest;
+    };
+  };
+
+  services.xserver = {
+    enable = true;
+    videoDrivers = [ "nvidia" ];
+  };
+
+  environment.variables = {
+    NIXOS_OZONE_WL = "1"; # Hint to electron apps to use Wayland
+    LIBVA_DRIVER_NAME = "nvidia";
+    __GLX_VENDOR_LIBRARY_NAME = "nvidia";
+    NVD_BACKEND = "direct"; # Set VAAPI driver backend
+  };
+
+  environment.systemPackages = with pkgs; [
+    clinfo
+    pciutils
+  ];
+}