Comment # 7 on bug 1044087 from Robert Munteanu

I may have a working solution, but it would be great for someone else to
validate it. Can you edit the following files:

-
/usr/share/vagrant/plugins/providers/virtualbox/action/package_setup_folders.rb
- /usr/share/vagrant/plugins/providers/virtualbox/action/package.rb

 and replace the require_relative calls with

  require "vagrant/action/general/package"

That at least fixes the packaging for me.