added system to dirs

modules/system/nvidia/default.nix

@@ -0,0 +1,37 @@
+{ pkgs, config, lib, ... }:
+
+let
+  cfg = config.system.nvidia;
+in
+{
+  options.system.nvidia = {
+    enable = lib.mkEnableOption "enables nvidia";
+  };
+
+  config = lib.mkIf cfg.enable {
+
+    services.xserver.videoDrivers = [ "nvidia" ];
+      boot.kernelModules = [ "nvidia" "nvidia_modeset" "nvidia_uvm" "nvidia_drm" ];
+#      boot.kernelModules = [ "nvidia" ];
+
+    hardware.graphics = {
+      enable = true;
+      enable32Bit = true;
+    };
+
+    # enable nvidia proprietary driver
+    hardware.nvidia = {
+      modesetting.enable = true;  # required
+      open = false;   # use proprietary driver
+      nvidiaSettings = true; # no shit
+      powerManagement.enable = false; # can cause sleep issues
+      package = config.boot.kernelPackages.nvidiaPackages.stable;
+    };
+
+    # enable docker gpu passthrough
+    hardware.nvidia-container-toolkit.enable = true;
+    virtualisation.docker.daemon.settings.features.cdi = true;
+    virtualisation.docker.rootless.daemon.settings.features.cdi = true;
+
+  };
+}