People running typing-extensions==3.10 faced this error for just any tutor command:
$ tutor version
...
Traceback (most recent call last):
File "/usr/local/bin/tutor", line 5, in <module>
from tutor.commands.cli import main
File "/usr/local/lib/python3.8/dist-packages/tutor/commands/cli.py", line 7, in <module>
from tutor import exceptions, fmt, hooks, utils
File "/usr/local/lib/python3.8/dist-packages/tutor/hooks/__init__.py", line 7, in <module>
from . import actions, contexts, filters, priorities
File "/usr/local/lib/python3.8/dist-packages/tutor/hooks/actions.py", line 18, in <module>
class ActionCallback(Contextualized, t.Generic[P]):
File "/usr/lib/python3.8/typing.py", line 261, in inner
return func(*args, **kwds)
File "/usr/lib/python3.8/typing.py", line 890, in __class_getitem__
raise TypeError(
TypeError: Parameters to Generic[...] must all be type variables
We fix this error by requiring a more recent version of typing-extensions.
See: https://discuss.openedx.org/t/tutor-v15-python-error-when-running-on-quickstart/8910/2
