Fonttools can be easily installed using Homebrew on MacOS, by running brew install fonttools
.
You should also install the brotli
extension (to compress WOFF 2.0) and zopfli
(to better compress WOFF 1.0) using:
/usr/local/Cellar/fonttools/4.2.4/libexec/bin/pip install brotli
/usr/local/Cellar/fonttools/4.2.4/libexec/bin/pip install zopfli