While experimenting with my InterfaceClass subclass I noticed that it
was only being used when it was specified as the first of the bases. I
believe this is because InterfaceClass is not a subclass of ``type``,
so the normal metaclass derivation logic is not applied. The attached
patch implements that logic in InterfaceClass.__new__, picking from
the base metaclasses that metaclass which subclasses all other base


Attachment: metaclass_resolution.diff
Description: Binary data

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