Commit
a8cfeb0111c263f1163b8a84e14ade5486fadb2a
by Oliver Smithdocs/Makefile: make SPHINXBUILD work in venv
sphinx-build doesn't use the PYTHONPATH from the venv, unless it runs
as python3 -m sphinx.cmd.build. We need it to use the imports from
PYTHONPATH, so we can update the pyosmocom version in requirements.txt
in a patch, and this new version will be used in the jenkins job that
runs during gerrit review. Otherwise the previously installed version
(from the docker image) will be used.
Related: https://github.com/sphinx-doc/sphinx/issues/8910
Change-Id: I487e1af6a3493df5b806cc2d3d2b70bc5233b89f