I have now added python-sphinx_rtd_theme, python-snowballstemmer, python-alabaster, python-Pygments > 2.x, and python-Sphinx (1.3.1) to Devel:Galaxy:Manager:Head. As a quick workaround, I would try to statically build docs and add them to the salt package. We need to get this done until EOB today for SUMa 3 GMC. Getting a 'real' build then has time until we ship the first salt update.