Public link: https://openzfs.github.io/openzfs-docs/
The dependencies are available via pip:
# For Debian based distros
sudo apt install pip3
# For RPM-based distros
sudo yum install python3-pip
pip3 install -r docs/requirements.txt
# Add ~/.local/bin to your $PATH, e.g. by adding this to ~/.bashrc:
PATH=$HOME/.local/bin:$PATH
cd docs
make html
# HTML files will be generated in: _build/html