NixOS Nvidia Installation

https://nixos.wiki/wiki/Nvidia Add the following lines to configuration.nix

#/etc/nixos/configuration.nix
 
{ config, lib, pkgs, ... }:
{
 
  # Enable OpenGL
  hardware.opengl = {
    enable = true;
  };
 
  # Load nvidia driver for Xorg and Wayland
  services.xserver.videoDrivers = ["nvidia"];
 
  hardware.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 = false;
 
    # 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 = false;
 
    # Enable the Nvidia settings menu,
	# accessible via `nvidia-settings`.
    nvidiaSettings = true;
 
    # Optionally, you may need to select the appropriate driver version for your specific GPU.
    package = config.boot.kernelPackages.nvidiaPackages.stable;
  };
  ...
}