It has been my experience that /usr/bin/rq is only installed by 'pip install rq' and it's not installed by 'pip3 install rq'. The only work around I have found is to: 1. pip install rq 2. pip3 install rq 3. edit /usr/bin/rq to use python3. How is this handled in the vagrant environment? It's not obvious to me looking at pulp-devel.