typing_extensions is still required in newer Python versions

This line is in poetry.lock

[package.dependencies]
attrs = ">=20"
typing_extensions = {version = "*", markers = "python_version >= \"3.7\" and python_version < \"3.8\""}

However, on a fresh Ubuntu 20.04 system, after I install pytest and pytest-django, I got this error when I ran my tests:

traceback snipped
  File "/home/vagrant/.local/share/virtualenvs/redacted-ikMrF094/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 170, in exec_module
    exec(co, module.__dict__)
  File "/home/vagrant/.local/share/virtualenvs/redacted/lib/python3.8/site-packages/django_test_migrations/contrib/pytest_plugin.py", line 6, in <module>
    from django_test_migrations.constants import MIGRATION_TEST_MARKER
  File "/home/vagrant/.local/share/virtualenvs/redacted/lib/python3.8/site-packages/_pytest/assertion/rewrite.py", line 170, in exec_module
    exec(co, module.__dict__)
  File "/home/vagrant/.local/share/virtualenvs/redacted/lib/python3.8/site-packages/django_test_migrations/constants.py", line 1, in <module>
    from typing_extensions import Final
ModuleNotFoundError: No module named 'typing_extensions'

It would appear this module still needs to depend on typing_extensions.

Ubuntu 20.04

Python 3.8.6

[jkugler]

I can’t seem to reproduce it now. I am wondering if I was relying on a project’s out-of-date Pipefile.lock. I’ll let you know if I come across this again.

[sobolevn]

Thanks! 👍