how to detect from a Vagrantfile if a plugin has been installed?

Question

I would like to detect if a plugin has been installed, so I can add some useful debugging tips for users.

I have tried the following code:

  if config.vbguest     config.vbguest.auto_update = true   else     puts "installing vagrant-vbguest plugin is recommended"   end 

However, Vagrant outputs * Unknown configuration section 'vbguest'.

Is there a way I can detect whether a plugin has been installed?

Answer 1

The Vagrant.has_plugin?(name) method returns true if a plugin has been installed.

Example:

unless Vagrant.has_plugin?("vagrant-some-plugin")   raise 'some-plugin is not installed!' end 

Original source: stackoverflow answer.