We've narrowed down the issue in the 2.5.0 release to be that we are not using auditwheel. To fix that we would need to redesign the build system. The plan that I have now is:

• Remove the custom fallback approach for using the system spglib vs bundled version
• Move the linked CMake project that scikit-build-core uses to the python sub-project
• Have a fall-back method at the build time, where if a system spglib is not detected, source the parent project, build and install it as part of the python build. Use $ORIGIN for the installed RPATH when in this fallback method.
• Check if we are building for PyPI, in which case, make sure the fall-back approach is taken

This is quite a refactor and I would prefer to do it after #458. In the meantime, there is an alternative workaround suggested in pypa/cibuildwheel#1929 (comment) involving wheel tags. I'll try to see how to adapt it.