add core configuration

modules/hardware/nvidia.nix

@@ -0,0 +1,67 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  cfg = config.lily.nvidia;
+in {
+  options.lily.nvidia.enable = lib.mkEnableOption "activate Nvidia GPU support";
+  config = lib.mkIf cfg.enable {
+    services.xserver.videoDrivers = ["nvidia"];
+    environment.systemPackages = with pkgs; [
+      libva-utils
+      nvidia-vaapi-driver
+      nvtopPackages.nvidia
+      pciutils
+      vdpauinfo
+      cudaPackages.cudatoolkit
+      cudaPackages.cudnn
+      cudaPackages.cutensor
+    ];
+    # environment.sessionVariables = lib.mkIf config.lily.wayland.enable {
+    #   GBM_BACKEND = "nvidia-drm";
+    #   __GLX_VENDOR_LIBRARY_NAME = "nvidia";
+    #   __GL_GSYNC_ALLOWED = "1";
+    # };
+    hardware = {
+      graphics = {
+        enable = true;
+        enable32Bit = true;
+        extraPackages = with pkgs; [
+          vaapiVdpau
+          libvdpau-va-gl
+          nvidia-vaapi-driver
+          ocl-icd
+        ];
+        extraPackages32 = with pkgs; [vaapiVdpau];
+      };
+      nvidia = {
+        # Modesetting is required.
+        modesetting.enable = true;
+
+        # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
+        # Enable this if you have graphical corruption issues or application crashes after waking
+        # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead
+        # of just the bare essentials.
+        powerManagement.enable = true;
+
+        # Fine-grained power management. Turns off GPU when not in use.
+        # Experimental and only works on modern Nvidia GPUs (Turing or newer).
+        powerManagement.finegrained = false;
+
+        # Use the NVidia open source kernel module (not to be confused with the
+        # independent third-party "nouveau" open source driver).
+        # Support is limited to the Turing and later architectures. Full list of
+        # supported GPUs is at:
+        # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus
+        # Only available from driver 515.43.04+
+        # Currently alpha-quality/buggy, so false is currently the recommended setting.
+        open = true;
+
+        # Optionally, you may need to select the appropriate driver version for your specific GPU.
+        package = config.boot.kernelPackages.nvidiaPackages.stable;
+      };
+    };
+  };
+}