Cannot use buildout.wheel in conjugation with bob.buildout

This config file works:

[buildout]
parts = tensorflow
extensions = buildout.wheel
newest = false
verbose = true

[tensorflow]
recipe = zc.recipe.egg
eggs = tensorflow
interpreter = python

[versions]
tensorflow = 1.3.0

However this

[buildout]
parts = scripts
develop = .
eggs = bob.learn.tensorflow
       tensorflow
extensions = bob.buildout
newest = false
verbose = true

[scripts]
recipe = bob.buildout:scripts

[versions]
tensorflow = 1.3.0

does not work. It runs but I cannot import tensorflow.