sphinx-book-theme 1.1.4 requires pydata-sphinx-theme 0.15.4 (0.16.1)

[72757373656c6c]

Describe the bug

context
When I update the pip environment for my sphinx-myst documentation project, I get an error.

Can sphinx-book-theme dependency be updated to the current pydata-sphinx-theme 0.16.1?

expectation
I expect the update to be successful.

bug
But instead I get an error:

ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
sphinx-book-theme 1.1.4 requires pydata-sphinx-theme==0.15.4, but you have pydata-sphinx-theme 0.16.1 which is incompatible.

problem
Anyone updating their pip environment for a sphinx-myst project may run into this problem when using the sphinx-book-theme.

A solution, after the pip upgrade, is to re-install sphinx-book-theme and it will downgrade pydata-sphinx-theme to 0.15.4 from 0.16.1.

===> pip list --outdated

Package             Version Latest Type
------------------- ------- ------ -----
pydata-sphinx-theme 0.15.4  0.16.1 wheel

links

• https://pypi.org/project/sphinx-book-theme/
• https://pypi.org/project/pydata-sphinx-theme/

Reproduce the bug

1. pip environment for a sphinx-myst project, that uses the sphinx-book-theme.
2. pip-review --auto --freeze-outdated-packages # upgrade - pydata-sphinx-theme 0.16.1
3. sphinx-book-theme gets dependency error
4. pip install sphinx-book-theme # downgrades pydata-sphinx-theme 0.15.4

List your environment

python --version and snippet from pip list

• Python 3.13.2
• Sphinx 8.2.3
• sphinx-book-theme 1.14
• pydata-sphinx-these 0.15.4 (sphinx-book-theme needs) 0.16.1 (current)
• myst-parser 4.0.1