python-sphinx_rtd_theme from home:ubn:charliecloud project
Select Your Operating System
Add repository and install manually
For CentOS 7 run the following as root:
cd /etc/yum.repos.d/ wget https://download.opensuse.org/repositories/home:ubn:charliecloud/CentOS_7/home:ubn:charliecloud.repo yum install python-sphinx_rtd_theme