Broken because of incomplete requirements

[stweil]

The CI tests fail when running make check because the dependencies are not modeled strict enough.

AttributeError: module 'tensorflow.keras' has no attribute '__version__'
AttributeError: module 'mpmath' has no attribute 'rational'

Which version of keras would work?

mpmath is also too new. Here the dependencies are torch -> sympy -> mpmath, and the error is in sympy which does not enforce a matching mpmath. Maybe torch must be downgraded or mpmath be added to the requirements.