Sphinx 5 support

[michaelosthege]

Context

Last week sphinx had a major release with some (but not many) breaking changes.

Locally I tried to upgrade, but several packages are still pinned to sphinx <5.

I'm opening this issue as a progress tracker.

Tasks and updates

Testing locally shows that several packages are pinned to sphinx <5, but already with a one-line change (first task list item) I got my dissertation project to build without errors, so it's probably not too hard to get Sphinx 5 support done.

Incompatibilities according to mamba:

package sphinx-jupyterbook-latex-0.4.6-pyhd8ed1ab_0 requires sphinx >=3,<5

Incompatibilities according to pip:

sphinx-thebe 0.1.2 requires sphinx<5,>=3.5, but you have sphinx 5.0.1 which is incompatible.
sphinx-jupyterbook-latex 0.4.6 requires sphinx<5,>=3, but you have sphinx 5.0.1 which is incompatible.
sphinx-external-toc 0.2.4 requires sphinx<5,>=3, but you have sphinx 5.0.1 which is incompatible.
sphinx-design 0.1.0 requires sphinx<5,>=3, but you have sphinx 5.0.1 which is incompatible.
sphinx-book-theme 0.3.2 requires sphinx<5,>=3, but you have sphinx 5.0.1 which is incompatible.
pydata-sphinx-theme 0.8.1 requires sphinx<5,>=3.5.4, but you have sphinx 5.0.1 which is incompatible.
myst-parser 0.15.2 requires sphinx<5,>=3.1, but you have sphinx 5.0.1 which is incompatible.
myst-nb 0.13.2 requires sphinx<5,>=3.1, but you have sphinx 5.0.1 which is incompatible.
jupyter-book 0.13.0 requires sphinx<5,>=4, but you have sphinx 5.0.1 which is incompatible.

• In jupyter-book/config.py the language=None default value must be updated (see release notes and this issue), MAINT: Don't set the default language #1750
• Testing with Sphinx 5 in the CI pipeline
• Remove sphinx-jupyterbook-latex feedstock recipe pin to sphinx <5 (the dependencies in the package itself don't have this pin)
• ...

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[chrisjsewell]

Note, there is already a meta issue for this: executablebooks/meta#750

[michaelosthege]

Note, there is already a meta issue for this: executablebooks/meta#750

Oh thanks, this didn't turn up in my search queries.

Looks like the ToDo list there is a superset of the items above, so I'll close this in favor of the existing one.