Vagrant-libvirt: can't activate ffi-0.6.4, already activated ffi-1.9.14 (Gem::LoadError)

[francisrod01]

Hi guys! Why the libvirt plugin vagrant takes previous version from rubygems?

$ vagrant plugin install libvirt
Installing the 'libvirt' plugin. This can take a few minutes...
/opt/vagrant/embedded/lib/ruby/2.2.0/rubygems/specification.rb:2100:in `check_version_conflict': can't activate ffi-0.6.4, already activated ffi-1.9.14 (Gem::LoadError)
    from /opt/vagrant/embedded/lib/ruby/2.2.0/rubygems/specification.rb:1276:in `activate'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/bundler.rb:323:in `block in activate_solution'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/bundler.rb:320:in `each'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/bundler.rb:320:in `activate_solution'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/bundler.rb:248:in `internal_install'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/bundler.rb:98:in `install'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/plugin/manager.rb:62:in `block in install_plugin'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/plugin/manager.rb:72:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/plugin/manager.rb:72:in `install_plugin'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/plugins/commands/plugin/action/install_gem.rb:37:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/action/warden.rb:34:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/action/builder.rb:116:in `call'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/action/runner.rb:66:in `block in run'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/util/busy.rb:19:in `busy'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/action/runner.rb:66:in `run'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/plugins/commands/plugin/command/base.rb:14:in `action'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/plugins/commands/plugin/command/install.rb:32:in `block in execute'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/plugins/commands/plugin/command/install.rb:31:in `each'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/plugins/commands/plugin/command/install.rb:31:in `execute'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/plugins/commands/plugin/command/root.rb:66:in `execute'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/cli.rb:42:in `execute'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/lib/vagrant/environment.rb:308:in `cli'
    from /opt/vagrant/embedded/gems/gems/vagrant-1.9.1/bin/vagrant:127:in `<main>'
tosystems@debian:~/Documents/box-images

How to resolve this, please?
Thanks! :)

[pronix]

vagrant plugin install vagrant-libvirt

[francisrod01]

I got it now! :D
Thanks @pronix !