{ config, pkgs, lib, ... }: {
  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It's perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "23.05"; # Did you read the comment?

  # Copy the NixOS configuration file and link it from the resulting system
  # (/run/current-system/configuration.nix). This is useful in case you
  # accidentally delete configuration.nix.
  # Not available with flakes
  # system.copySystemConfiguration = true;

  nix.settings.experimental-features = [ "nix-command" "flakes" ];

  nixpkgs.config.allowUnfree = true;

  virtualisation.vmVariant = {
    users.users = lib.pipe config.users.users [
      (lib.filterAttrs (n: u: u.isNormalUser))
      (builtins.mapAttrs
        (_: userattr: lib.mkForce (userattr // { password = lib.mkForce "john"; })))
    ];

    virtualisation = {
      memorySize = 2048; # В мегабайти
      cores = 2;
    };
  };
}