MarsSeed [1] filed a deletion request for pypy-packaging [2]:

This dual PyPy/PyPy3 package is broken and unmaintained. It is missing its pypy-setuptools makedepends.

The best course of action is to delete this pkgbase, and upload a new pypy3-packaging pkgbase, if someone wants to maintain such.

[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/pypy-packaging/