subj. In a long run it's a RDEPEND for sci-libs/vtk. Revdeps: >=dev-python/cbor-1.0.0 >=dev-python/txaio-2.7.0 >=dev-python/wsaccel-0.6.2 Reproducible: Always
So this is only used by sci@ packages. I don't think python@ has any manpower to maintain it.
python 3.7 and 3.8 will be in the 20.4.3 release
I suppose this one can be resolved as well due to resolution of the #715958.