# Note: depends on pkg-config
# Note: depends on libffi
# Note: depends on Python
# Note: depends on setuptools
wget -c https://github.com/tkem/cachetools/archive/v3.1.1/cachetools-3.1.1.tar.gz
tar -xzf cachetools-3.1.1.tar.gz
cd cachetools-3.1.1
python3 setup.py build
python3 setup.py install # as root