With Leap 15.1, sphinx-build crashes with the following error:

"
sphinx-build-2.7 -b text -d build/doctrees   source build/text
Running Sphinx v1.7.6

Extension error:
Could not import extension sphinxcontrib.autohttp.flask (exception: cannot
import name Directive)
"

Directive got dropped with Sphinx 1.7.1 (15.1 ships 1.7.6).

This error got fixed in python-sphinxcontrib-httpdomain 1.6.1 (15.1 ships
1.5.0).

I've tried it with the last building version from devel:languages:python
(1.7.0) which fixed the issue for me.