plp [1] filed a orphan request for openprinting-ppds-postscript-ricoh
[2]:

User nhelke hasn't updated this package for quite some time now. I'd
like to do it instead.

The changes needed are trivial: just a matter of removing a
dependency, changing the link and security checksum, and updating a
piece of code that restarts cups.

I have a Ricoh copier to test it with.

[1] https://aur.archlinux.org/account/plp/
[2]
https://aur.archlinux.org/pkgbase/openprinting-ppds-postscript-ricoh/