Edit: This question has gotten quite old and is no longer useful. Prestissimo isn't really useful any more now that Composer 2 is out. The way to use composer 2 in DDEV-Local v1.16 is ddev config --composer-version=2
. In DDEV-Local v1.17 Composer 2 will be the default.
Original question:
I'd like to use hirak/prestissimo to speed up the downloads for my DDEV-Local composer builds on all my projects, but I don't know how to install it globally. How can I install it?