{ config, hostName ? "nixos", ... }: {
  config = mkMerge [
    {
      nix.settings.experimental-features = [ "nix-command" "flakes" ];

      virtualisation.virtualbox.guest.enable = true;

      # Mount a VirtualBox shared folder.
      fileSystems."/vagrant" = {
        fsType = "vboxsf";
        device = "vagrant";
        options = [ "rw,uid=1001,gid=60,_netdev" ]; # mount as vagrant:nginx
      };

      networking.hostName = hostName;
      networking.extraHosts = ''
        127.0.0.1 ${config.networking.hostName}.local
      '';

      security.sudo.wheelNeedsPassword = false;

      users.users.root.password = "vagrant";
      users.users."vagrant" = {
        isNormalUser = true;
        password = "vagrant";
        extraGroups = [
          "nginx"
          "wheel"
          # Allow mounting of shared folders.
          "vboxsf"
        ];
      };

      services.openssh.enable = true;

      services.avahi = {
        enable = true;
        publish = {
          enable = true;
          addresses = true;
          workstation = false;
        };
      };
    }
    mkIf
    services.laravel.enable
    {
      services.laravel.root = mkDefault /vagrant;
      services.laravel.domain = mkDefault (config.networking.hostName + ".local");
    }
  ];
}