# Note: depends on pkg-config
# Note: depends on libffi
# Note: depends on Python
# Note: depends on setuptools
wget -c https://github.com/zopefoundation/zope.interface/archive/4.6.0/zope.interface-4.6.0.tar.gz
tar -xzf zope.interface-4.6.0.tar.gz
cd zope.interface-4.6.0
python3 setup.py build
python3 setup.py install # as root