tce-load -i compiletc python-dev python-setuptools python-idna pyasn1 python-cffi pycparser openssl-1.1.1-dev

https://files.pythonhosted.org/packages/be/60/da377e1bed002716fb2d5d1d1cab720f298cb33ecff7bf7adea72788e4e4/cryptography-2.8.tar.gz

cd cryptography-2.8

python2.7 setup.py build
sudo python2.7 setup.py install --old-and-unmanageable--root=/tmp/pkg

No local packages or working download links found for cffi!=1.11.3,>=1.8