app-emulation/vagrant-1.4.3-r2 doesn't support app-emulation/virtualbox-5.0.0. Reproducible: Always Steps to Reproduce: 1. Install vagrant 2. Install virtualbox-5.0.0 3. Try to launch vagrant Actual Results: % vagrant box update The provider 'virtualbox' that was requested to back the machine 'default' is reporting that it isn't usable on this system. The reason is shown below: Vagrant has detected that you have a version of VirtualBox installed that is not supported. Please install one of the supported versions listed below to use Vagrant: 4.0, 4.1, 4.2, 4.3 Expected Results: I expected that everything would be fine. I think our vagrant ebuild should explicitly list supported virtualbox versions.
Err, I actually meant app-emulation/vagrant-bin-1.7.2-r2 (but app-emulation/vagrant-1-4.3-r2 is probably affected as well).
I can confirm that version 1.4.3 suffers from the same issue. According to the changelog https://github.com/mitchellh/vagrant/blob/v1.7.3/CHANGELOG.md support for virtualbox 5.0 was added with version 1.7.3. Packaging a more recent version of vagrant is difficult on gentoo becuase of many missing dependencies. There is a -bin package (and ebuild for 1.7.4) available and discussed in bug #563548 . I suggest closing this bug and moving efforts towards supporting a recent version of vagrant on gentoo. Michael
Version 1.8.1 in tree, works with latest Virtualbox.