Hi! Support for VirtualBox 5.1 was introduced with Vagrant 1.8.5 [1], only. Before that you get a mis-leading "No usable default provider could be found for your system." error despite VirtualBox beinging found: # vagrant up --provider=virtualbox --debug |& fgrep -i Finding DEBUG command: Finding machine that match name: default DEBUG meta: Finding driver for VirtualBox version: 5.1.2 That#s why I would recommend adding a blocker to RDEPEND. I can add the blocker myself, if you're okay with it. Bug #590588 is related but not a dependency. Best Sebastian [1] https://github.com/mitchellh/vagrant/blob/master/CHANGELOG.md#185-july-18-2016
Thanks Sebastian, yes please add the blocker. It would take me longer because I'd have to run it through the @proxy-maint.
Alright! commit 3cd1709b6bc9a23a7cdd75ea60e2f2073b5e0f2b Author: Sebastian Pipping <sping@g.o> Date: Sat Aug 6 15:12:59 2016 +0200 app-emulation/vagrant: Require VirtualBox <5.1 (bug #590592) Package-Manager: portage-2.2.28 app-emulation/vagrant/vagrant-1.8.1.ebuild | 2 +- app-emulation/vagrant/vagrant-1.8.4.ebuild | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) https://github.com/gentoo/gentoo/commit/3cd1709b6bc9a23a7cdd75ea60e2f2073b5e0f2b