required_plugins = %w()

requires_restart = false

# Add vagrant-vbguest plugin only if using VirtualBox
Vagrant.configure("2") do |config|
  config.vm.provider :virtualbox do
    required_plugins.push("vagrant-vbguest")
  end
end

required_plugins.each do |plugin|
  unless Vagrant.has_plugin? plugin
    system "vagrant plugin install #{plugin}"
    requires_restart = true
  end
end 

if requires_restart
  exec "vagrant #{ARGV.join' '}"
end