{ pkgs, ... }: {

  imports = [
    <nixpkgs/nixos/modules/virtualisation/virtualbox-image.nix>
  ];

  security.sudo.wheelNeedsPassword = false;
  services.sshd.enable = true;

  users.extraUsers.you = {
    extraGroups = [
      "wheel"
    ];
    isNormalUser = true;
    openssh.authorizedKeys.keys = [
      "ssh-rsa YOUR PUBLIC KEY you@your-machine"
    ];
  };
}