Using vagrant-rackspace and vagrant-aws together

Gemfile

# If you just do:
# $ vagrant plugin install vagrant-aws
# $ vagrant plugin install vagrant-rackspace
# $ vagrant plugin list
# Then it will downgrade vagrant-aws to 0.0.1 (rather than downgrading fog)

# A sample Gemfile
source "https://rubygems.org"

group :plugins do
  # If you don't include vagrant in the gem, then when you run `bundle exec vagrant plugin list` you will get the erro:
  # > vagrant is not part of the bundle. Add it to Gemfile. (Gem::LoadError)
  gem 'vagrant'
  # But by adding it to the Gemfile, when you install you will get a message that says:
  # > Thanks for wanting to use Vagrant! Unfortunately, this is not the way
  # > to install Vagrant anymore.
  
  # Also, when you try to use vagrant outside the bundle again (e.g. in a different project where you don't need any plugins),
  # then it may still find the vagrant executable from the gem rather than the system vagrant, so you will get the same message
  # from above and vagrant will exit (because it finds, e.g. /opt/boxen/rbenv/shims/vagrant instead of /usr/bin/vagrant
  gem 'vagrant-aws', '0.4.1'
  gem 'vagrant-rackspace'
end