I can only get the theme to work locally. If I use make html it works properly, using automated tools like githubpages or readthedocs however, the documentation is broken.

How do I properly use it? I don't want an unnecessary dependency in my python project, thus it is not included in requirements.txt or setup.py. Instead, I just put a zip file in docs/source which works perfectly local, but not using a service.
What is a proper way use this theme?