{ config, pkgs, ... }:
{

  nixpkgs.config.allowUnfree = true;

  services.xserver.videoDrivers = [ "nvidia" ];
  hardware.graphics = {
    enable = true;
    enable32Bit = true;
  };

  hardware.nvidia = {
    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).
    # (requires offloading)
    powerManagement.finegrained = false;

    open = false;
    nvidiaSettings = true;
    package =
      let
        base = config.boot.kernelPackages.nvidiaPackages.mkDriver {
          version = "590.48.01";
          sha256_64bit = "sha256-ueL4BpN4FDHMh/TNKRCeEz3Oy1ClDWto1LO/LWlr1ok=";
          openSha256 = "sha256-hECHfguzwduEfPo5pCDjWE/MjtRDhINVr4b1awFdP44=";
          settingsSha256 = "sha256-4SfCWp3swUp+x+4cuIZ7SA5H7/NoizqgPJ6S9fm90fA=";
          persistencedSha256 = "";
        };
        cachyos-nvidia-patch = pkgs.fetchpatch {
          url = "https://raw.githubusercontent.com/CachyOS/CachyOS-PKGBUILDS/master/nvidia/nvidia-utils/kernel-6.19.patch";
          sha256 = "sha256-YuJjSUXE6jYSuZySYGnWSNG5sfVei7vvxDcHx3K+IN4=";
        };

        # Patch the appropriate driver based on config.hardware.nvidia.open
        driverAttr = if config.hardware.nvidia.open then "open" else "bin";
      in
      base
      // {
        ${driverAttr} = base.${driverAttr}.overrideAttrs (oldAttrs: {
          patches = (oldAttrs.patches or [ ]) ++ [ cachyos-nvidia-patch ];
        });
      };

    # package = config.boot.kernelPackages.nvidiaPackages.unstable;
  };

}