[BUG]: Python 3.13.3 circular import

[petrasvestartas]

Problem description

All python versions builds without problem but any c/c++ package from nanobind fails on python 3.13.3.

This happens on cibuildwheels when we try to distribute the package to pypi.

Reproducible example code

In this repository python 3.13 cibuildwheels cannot build and test even a simple file:
compas_shapeop

Installation and local cibuildwheels can be tested like that:

conda create -n compas_shapeop -c conda-forge python=3.9 compas -y
pip install -r requirements-dev.txt
cibuildwheel --output-dir wheelhouse .

Error:

ImportError while importing test module 'C:\brg\code\forks\compas_shapeop\tests\test_dynamicsolver.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
C:\brg\code\forks\compas_shapeop\tests\test_dynamicsolver.py:3: in <module>
    from compas_shapeop.shapeop import Solver
..\venv-test\Lib\site-packages\compas_shapeop\shapeop.py:9: in <module>
    from ._shapeop import SolverWrapper
E   ModuleNotFoundError: No module named 'compas_shapeop._shapeop'

[petrasvestartas]

This is the solution:
scikit-build/scikit-build-core#1077

[henryiii]

Maybe this can be detected and a nice error could be thrown.