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 confi         


        

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.