Commit 93f7259

ctypes

* As a consequence of necessary internal refactoring, initialization of

internal metaclasses now happens in ``__init__`` rather

than in ``__new__``. This affects projects that subclass these internal

metaclasses to provide custom initialization.

Generally:

- Custom logic that was done in ``__new__`` after calling ``super().__new__``

should be moved to ``__init__``.

- To create a class, call the metaclass, not only the metaclass's

``__new__`` method.

See :gh:`124520` for discussion and links to changes in some affected

projects.