# Note: depends on pkg-config
# Note: depends on libffi
# Note: depends on Python
# Note: depends on setuptools
wget -c https://github.com/python-attrs/attrs/archive/19.1.0/attrs-19.1.0.tar.gz
tar -xzf attrs-19.1.0.tar.gz
cd attrs-19.1.0
python3 setup.py build
python3 setup.py install # as root