tce-load -i compiletc python3.6-dev

wget https://files.pythonhosted.org/packages/2e/92/87bb61538d7e60da8a7ec247dc048f7671afe17016cd0008b3b710012804/cffi-1.14.6.tar.gz

cd cffi-1.14.6

python3.6 setup.py build
sudo python3.6 setup.py install --root=/tmp/pkg