Do not rely on transitive dependencies
The package python3-sphinx_rtd_theme is required at build time
but it is not installed by default with python-sphinx >= 2.0.0
sh$ dnf repoquery --requires python3-sphinx
Last metadata expiration check: 0:43:28 ago on Wed 01 May 2019 02:14:04 PM CEST.
/usr/bin/python3
python(abi) = 3.7
python3.7dist(alabaster) < 0.8
python3.7dist(alabaster) >= 0.7
python3.7dist(babel) >= 1.3
python3.7dist(docutils) >= 0.12
python3.7dist(imagesize)
python3.7dist(jinja2) >= 2.3
python3.7dist(packaging)
python3.7dist(pygments) >= 2.0
python3.7dist(requests) >= 2.5.0
python3.7dist(setuptools)
python3.7dist(snowballstemmer) >= 1.1
python3.7dist(sphinxcontrib-applehelp)
python3.7dist(sphinxcontrib-devhelp)
python3.7dist(sphinxcontrib-htmlhelp)
python3.7dist(sphinxcontrib-jsmath)
python3.7dist(sphinxcontrib-qthelp)
python3.7dist(sphinxcontrib-serializinghtml)