I also experienced this, and I can confirm the fix from #7 works (thanks, Konstantine).
So if this is invalid as a python bug, maybe it is a virtualenv bug? Maybe there should be some upgrade automatism, or at least an upgrade hint? Or are virtualenvs supposed to break on upgrades?
I also experienced this, and I can confirm the fix from #7 works (thanks, Konstantine).
So if this is invalid as a python bug, maybe it is a virtualenv bug? Maybe there should be some upgrade automatism, or at least an upgrade hint? Or are virtualenvs supposed to break on upgrades?