The one-line quick fix for vagrant bundler.rb is as follows: sudo sed -i'' "s/Specification.all = nil/Specification.reset/" /usr/lib/ruby/vendor_ruby/vagrant/bundler.rb
Source: https://github.com/vagrant-libvirt/vagrant- libvirt/issues/575#issuecomment-231612940 ** Bug watch added: github.com/vagrant-libvirt/vagrant-libvirt/issues #575 https://github.com/vagrant-libvirt/vagrant-libvirt/issues/575 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1559420 Title: plugin install fails in ubuntu/debian packaged version of vagrant (xenial) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vagrant/+bug/1559420/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs