setuptools v64 introduces the new PEP 660 hooks, which seems to be incompatible with versioneer (as per pypa/setuptools#3501)

The idea of this PR is to try finding a way to make the integration with the new version work properly.

Disclaimer: I am not very familiar with python-versioneer, so please forgive me if there is something wrong here.

Deep explanation

This means that when pip install -e . runs, it will try to use the new editable_wheel command instead of develop.

Previously, the develop command special-cased build_py and build_ext and treated each command considering the knowledge on what they do.

This was problematic because custom build steps could not run during an editable install.

editable_wheel tries to use a more generic approach and fix the problem of custom build steps:

• all the build subcommands should run.
• each command have the opportunity to early return by checking if the current build is an editable install or not.

For versioneer the implication is that the build_lib directory may not contain a _version.py file.