It would be nice to have a mingw build for Python3 that can be used by
mingwxx-gdb and other packages wanting Python3 support.

There could be two sources for such a package:
1.
https://build.opensuse.org/package/show/home%3Ajayvdb%3Awine-python3%3Apy37/mingw32-python3 
2. https://github.com/python-cmake-buildsystem/python-cmake-buildsystem

The first one uses a custom python build system that is native to the obs
project and looks like it would be a lot of work to understand and maintain.

Since the build system of the second proposal is based on a known build system
(cmake) and it is managed on github, it is suspected that maintenance will be
easier here, but may still need adjustments to add mingw based cross-compile
functionality and package that.