nixos-dotfiles/modules/hardware/nvidia.nix

{ pkgs, config, ... }:
{
  nixpkgs.config.allowUnfree = true;

  services.xserver.videoDrivers = [ "nvidia" ];

  hardware.opengl.enable = true;
  hardware.opengl.driSupport32Bit = true;

  # This enables vulkan layers
#  hardware = {
#    opengl =
#      let
#        fn = oa: {
#          nativeBuildInputs = oa.nativeBuildInputs ++ [ pkgs.glslang ];
#          mesonFlags = oa.mesonFlags ++ [ "-Dvulkan-layers=device-select,overlay" ];
#          patches = oa.patches ++ [ ./mesa-vulkan-layer-nvidia.patch ];
#          postInstall = oa.postInstall + ''
#              mv $out/lib/libVkLayer* $drivers/lib

              #Device Select layer
#              layer=VkLayer_MESA_device_select
#              substituteInPlace $drivers/share/vulkan/implicit_layer.d/''${layer}.json \
#                --replace "lib''${layer}" "$drivers/lib/lib''${layer}"

              #Overlay layer
#              layer=VkLayer_MESA_overlay
#              substituteInPlace $drivers/share/vulkan/explicit_layer.d/''${layer}.json \
#                --replace "lib''${layer}" "$drivers/lib/lib''${layer}"
#            '';
#        };
#      in
#      with pkgs; {
#        enable = true;
#        driSupport32Bit = true;
#        package = (mesa.overrideAttrs fn).drivers;
#        package32 = (pkgsi686Linux.mesa.overrideAttrs fn).drivers;
#      };
#  };
  
  hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.stable;
}