"pip install xfem --pre" fails for ngsolve==6.2.2405

Dear community,
I have problems to pip install xfem for ngsolve version 6.2.2405. I am working on Windows. Two colleagues of mine encounter the same problem. We get this error:

ERROR: Failed building wheel for xfem
Failed to build xfem
ERROR: ERROR: Failed to build installable wheels for some pyproject.toml based projects (xfem)

A few month ago, I installed xfem without problems. However, they were different versions. I had ngsolve==6.2.2404.post51 xfem==2.1.2404.

Now, I am wondering whether xfem is not yet compatible with the new ngsolve. The lib and dll files, which I found for example in ‘site_packages/netgen’ look quite different between the two ngsolve versions.

Any idea what a possible solution might be? Is there a possibility to pip-install older versions of ngsolve (I am only able to install 6.2.2405)?

Thank you for your help.
Best,
Michael Loibl