Error building with libpython and m2w64-toolchain

Package Builders conda-forge
1

hi everyone. I have been building my package for some years already successfully, but since the last update to libpython (I think gcc was updated?) I am failing to build on windows. I am failing on my feedstock, and also locally. I would like to fix it locally first.
What I am doing is in summary this:

pip install cython
conda install -c conda-forge libpython m2w64-toolchain
python.exe setup.py config --compiler=mingw32
python setup.py bdist_wheel

And I am getting a bunch of errors like this:

undefined reference to `__imp__Py_NoneStruct’

here what I am doing:

here an example of the output
https://ci.appveyor.com/project/ofajardo/pyreadr-wheels4/builds/51343057/job/qtibsk8joe6x1yly

Any suggestion?

@Isuru Fernando @Chris Burr