auto feature broken with aiohttp 3.7.0

[bhartshorn]

Environment

Python Version: 3.8.6

Nikola Version: v8.1.1 installed via pip in venv

Operating System: Arch Linux

Description:

It seems that the version 3.7.0 of aiohttp - released ~18 hours ago - is not supported. I'm seeing this error when running nikola auto:

[2020-10-24 21:49:47] ERROR: Nikola: In order to use the "auto" command, you must install the "aiohttp" Python package.
[2020-10-24 21:49:47] ERROR: Nikola: Exiting due to missing dependencies.

After explicitly installing aiohttp 3.6.2, nikola auto runs as expected.

[Kwpolska]

This seems to be caused by a bug in aiohttp==3.7.0, which needs typing_extensions but fails to declare it as a dependency. aiohttp==3.7.1 has been released, and this error doesn’t occur (I also can’t reproduce if I manually downgrade to 3.7.0 without removing typing_extensions). See aio-libs/aiohttp#5107.