Problem

Recently, I updated Python 3.9.6 to Python 3.10 RC. No problems. When I want to compile my Sphinx documentation (make html), I see:

$ make build
sphinx-build -b html -d _build/doctrees . _build/html
Traceback (most recent call last):
File "/home/titouan/.local/bin/sphinx-build", line 5, in
from sphinx.cmd.build import main
File "/home/titouan/.local/lib/python3.10/site-packages/sphinx/cmd/build.py", line 25, in
from sphinx.application import Sphinx
File "/home/titouan/.local/lib/python3.10/site-packages/sphinx/application.py", line 32, in
from sphinx.config import Config
File "/home/titouan/.local/lib/python3.10/site-packages/sphinx/config.py", line 21, in
from sphinx.util import logging
File "/home/titouan/.local/lib/python3.10/site-packages/sphinx/util/init.py", line 41, in
from sphinx.util.typing import PathMatcher
File "/home/titouan/.local/lib/python3.10/site-packages/sphinx/util/typing.py", line 37, in
from types import Union as types_Union
ImportError: cannot import name 'Union' from 'types' (/usr/lib64/python3.10/types.py)
make: *** [Makefile:53 : html] Erreur 1

Union is no longer in types

I suggest you update the sphinx code to be usable with oython 3.10 as it will be released very soon
If you want some help, I can contribute to sphinx.

Solution

I suggest you update the sphinx code to be usable with python 3.10 as it will be released very soon ( 4 october )
If you want some help, I can contribute to sphinx.

Additional context

• What's new Python 3.10
• Python 3.10 on python.org
• Release notes