tce-load -i compiletc python3.6-dev cairo-dev

wget https://github.com/pygobject/pycairo/releases/download/v1.20.0/pycairo-1.20.0.tar.gz

cd pycairo-1.20.0

python3.6 setup.py build
sudo python3.6 setup.py install --optimize=1 
sudo python3.6 setup.py install_pycairo_header
sudo python3.6 setup.py install_pkgconfig

/usr/local/include/pycairo/py3cairo.h
/usr/local/lib/pkgconfig/py3cairo.pc