Arch Linux

Nothing needs python3 PIL version 6.x, so there really is no reason to provide an old package.

The usual way to provide old versions of a python2 package when upstream drops python2 support is to create a new PKGBUILD for e.g. python2-pillow only, and package it at the latest version.

e.g. astroid, cairo, isort, numpy, pylint, setuptools, cherrypy, pygments, pyxattr, sphinx...

NOT to create a new PKGBUILD for e.g. python2-pillow only, and package it at the latest version, but then also change the package name.

python2-pillow6 causes unnecessary confusion, and due to the lack of the "replaces" keyword, also does not get installed on users' machines, causing even greater confusion when they notice that programs depend on a package that has disappeared from the repos.