Python 3.10 support

[jab]

Describe the bug

I just hit #9512 while testing my project in CI with the latest release of Sphinx (4.1.2) and the latest release of Python 3.10 (currently 3.10.0-rc1). (Thanks for fixing this already!)

This prompted me to check whether Sphinx itself is testing against the latest release of Python 3.10 in CI, and it looks like Sphinx is currently only testing against 3.10-dev. This in turn prompted me to look for an existing, high-level "Python 3.10 support" issue, which users could subscribe to in order to track Sphinx's Python 3.10 compatibility. Since I didn't find such an issue, I'm creating this one in case it's helpful.

How to Reproduce

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Expected behavior

No response

Your project

https://github.com/jab/bidict

Screenshots

No response

OS

all

Python version

3.10

Sphinx version

4.1.2

Sphinx extensions

No response

Extra tools

No response

Additional context

No response

[tk0miya]

Thank you for reporting. It was already reported as #9562. As you mentioned, problems have already been fixed in the HEAD of Sphinx. So please wait for the next release. If you'd like to try to use the fixed version, please install it from github directly.

Thanks,