{pkgs, ... }:
{
  system.stateVersion = "23.05";

  # Enables flakes and the updated `nix` command
  nix.settings.experimental-features = [ "nix-command" "flakes" ];

  # Enables opengl support
  hardware.opengl.enable = true;

  # Includes packages needed for startx
  environment.systemPackages = with pkgs; [
    xorg.xauth xorg.xinit
  ];
  
  users = {
    # No need to edit users on a single-purpose system.
    mutableUsers = false;
    users = {
      # My authorized keys are used for remote access
      #  CHANGE THIS if forking
      root.openssh.authorizedKeys.keyFiles = [
        ./authorized_keys
      ];
      # Unprivledged user for running the application.
      appuser = {
        isNormalUser = true;
        group = "appuser";
        password = "";
        packages = with pkgs; [
          graphfix
        ];
      };
    };
  };

  # Allow SSH with authorized keys only!
  services.openssh = {
    enable = true;
    settings.PasswordAuthentication = false;
  };
}