m2w64 in compiled conda pkg

[baugetfa]

When installing ratp with:
mamba create -n test openalea.ratp -c openalea3/label/dev
we have that in the dependencies and we should not:

m2w64-gcc-libgfortran                 5.3.0  6                      conda-forge             Cached
m2w64-gcc-libs                        5.3.0  7                      conda-forge             Cached
m2w64-gcc-libs-core                   5.3.0  7                      conda-forge             Cached
m2w64-gmp                             6.1.0  2                      conda-forge             Cached
m2w64-libwinpthread-git 

In fact that makes under windows conflict with openalea.adel that has rpy2 as dependency then r-base that has mingw-w64-ucrt-x86_64 as dependency.