I ffing give up for today...

modules/nixos/hardware/gpu/nvidia/default.nix

@@ -0,0 +1,49 @@
+{ pkgs, lib, namespace, config, ... }:
+let
+  inherit (lib) mkIf mkEnableOption;
+
+  cfg = config.${namespace}.hardware.has.gpu;
+in
+{
+  options.${namespace}.hardware.has.gpu.nvidia = mkEnableOption "Enable NVidia gpu configuration";
+
+  config = mkIf cfg.nvidia {
+    services.xserver.videoDrivers = [ "nvidia" ];
+
+    hardware = {
+      graphics = {
+        enable = true;
+        enable32Bit = true;
+      };
+
+      nvidia = {
+        modesetting.enable = true;
+        open = false;
+        nvidiaSettings = true;
+
+        powerManagement = {
+          enable = true;
+          finegrained = false;
+        };
+
+        # package = config.boot.kernelPackages.nvidiaPackages.vulkan_beta;
+
+        # package = let
+        #   rcu_patch = pkgs.fetchpatch {
+        #     url = "https://github.com/gentoo/gentoo/raw/c64caf53/x11-drivers/nvidia-drivers/files/nvidia-drivers-470.223.02-gpl-pfn_valid.patch";
+        #     hash = "sha256-eZiQQp2S/asE7MfGvfe6dA/kdCvek9SYa/FFGp24dVg=";
+        #   };
+        # in config.boot.kernelPackages.nvidiaPackages.mkDriver {
+        #   version = "550.40.07";
+        #   sha256_64bit = "sha256-KYk2xye37v7ZW7h+uNJM/u8fNf7KyGTZjiaU03dJpK0=";
+        #   sha256_aarch64 = "sha256-AV7KgRXYaQGBFl7zuRcfnTGr8rS5n13nGUIe3mJTXb4=";
+        #   openSha256 = "sha256-mRUTEWVsbjq+psVe+kAT6MjyZuLkG2yRDxCMvDJRL1I=";
+        #   settingsSha256 = "sha256-c30AQa4g4a1EHmaEu1yc05oqY01y+IusbBuq+P6rMCs=";
+        #   persistencedSha256 = "sha256-11tLSY8uUIl4X/roNnxf5yS2PQvHvoNjnd2CB67e870=";
+
+        #   patches = [ rcu_patch ];
+        # };
+      };
+    };
+  };
+}