Install instructions out of date

[jwallace42]

Following the directions in the readme produces the following error.

pip3 uninstall sphinx==3.5.0 breathe==4.28.0 sphinx_rtd_theme sphinxcontrib-plantuml jinja2==3.0.3 make html

Traceback (most recent call last): File "/home/josh/.local/bin/sphinx-build", line 5, in <module> from sphinx.cmd.build import main File "/home/josh/.local/lib/python3.10/site-packages/sphinx/cmd/build.py", line 25, in <module> from sphinx.application import Sphinx File "/home/josh/.local/lib/python3.10/site-packages/sphinx/application.py", line 32, in <module> from sphinx.config import Config File "/home/josh/.local/lib/python3.10/site-packages/sphinx/config.py", line 23, in <module> from sphinx.util import logging File "/home/josh/.local/lib/python3.10/site-packages/sphinx/util/__init__.py", line 35, in <module> from sphinx.util import smartypants # noqa File "/home/josh/.local/lib/python3.10/site-packages/sphinx/util/smartypants.py", line 33, in <module> from sphinx.util.docutils import __version_info__ as docutils_version File "/home/josh/.local/lib/python3.10/site-packages/sphinx/util/docutils.py", line 31, in <module> from sphinx.util.typing import RoleFunction File "/home/josh/.local/lib/python3.10/site-packages/sphinx/util/typing.py", line 34, in <module> from types import Union as types_Union ImportError: cannot import name 'Union' from 'types' (/usr/lib/python3.10/types.py)

The issue is discussed here.

In order to install correctly, with python 3.10 I did the following:

pip3 uninstall sphinx==4.2.0 breathe sphinx_rtd_theme sphinxcontrib-plantuml jinja2==3.0.3 make html

[SteveMacenski]

Why are you uninstalling?

Try proposing a PR to make those changes in CI + readme for local building https://github.com/ros-planning/navigation.ros.org/blob/master/.circleci/config.yml

If it turns over correctly, then we can merge and update the pair. I just want to keep CI and local development in alignment, but yeah, its probably very outdated for the sake of keeping stability. We can upgrade.

[jwallace42]

That was a mistype :(.

pip3 install sphinx==4.2.0 breathe sphinx_rtd_theme sphinxcontrib-plantuml jinja2==3.0.3 make html

I will put in a pr for this later today.

[AlexeyMerzlyakov]

I also have noticed sphinx==3.5.0 dependency problems on my local Ubuntu 22.04 PC, so raising the problem. #465 attempts to fix it.