Virtualenv

# Install virtualenv and create folder for python environments
pip3 install virtualenv
mkdir ~/virtualenv
cd ~/virtualenv

# Create Virtual Environment
virtualenv -p python3 sphinx

# Go Into Environment
source ~/virtualenv/sphinx/bin/activate

# Change to repo dir
cd ~/repos/docs

# Install all packages we need
pip3 install -r requirements.txt

# You can then do stuff
make html

# Get out of the virtual environment
deactivate