It turned out that I had GEM_HOME and GEM_PATH still set from a setup on another machine, which caused ruby the search the wrong path. After getting rid of those, everything works as expected.
This bug report can be closed, afaic. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1708125 Title: vagrant fails with error "can't find gem vagrant" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vagrant/+bug/1708125/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs