{ config, pkgs, ... }:
{
  nix = {                                                                         
    settings = {                                                                  
      # Enable flakes                                                             
      experimental-features = [ "nix-command" "flakes" ];                         
                                                                                
      # Optimize storage                                                          
      auto-optimise-store = true;                                                 
                                                                                
      # substituters = lib.mkForce [ ];                                           
      # trusted-substituters = lib.mkForce [ ];                                   
      # require-sigs = false;                                                     
    };                                                                            
  };                                                                              
                                                                                
  # List packages installed in system profile.                                    
  # These should be tools in case user tools brake.                               
  # To search, run:                                                               
  # $ nix search <pkgname>                                                        
  # or                                                                            
  # $ nh search <pkgname>                                                         
  environment.systemPackages = with pkgs; [                                       
    alacritty                                                                     
    git                                                                           
    helix                                                                         
    xdg-utils                                                                     
  ];                                                                              
}