Arch Linux

Description:

ceph.sysusers takes care of adding ceph as system user upon installation.
However, this user is not removed when the package gets removed. This is annoying if ceph gets installed as a build dependency for another package - once the other package is built and ceph is uninstalled, shadow.service will (rightfully) complain:

user 'ceph': directory '/run/ceph' does not exist

I asked in #archlinux about a similar situation for another package (from the packager's point of view):

deep42thought: Hi, what's the intended way for packagers to remove users created by systemd-sysusers? (link: https://www.archlinux.org/todo/switch-to-systemd-sysusers/ )
jelle: deep42thought: we don't remove users when removing a package
deep42thought: jelle: but assume, I have a package which installs a user with a home directory also installed by this package
deep42thought: once I remove the package, shadow.service complains
deep42thought: because the user still exists but the home is gone
jelle: deep42thought: yeha, manually fix it
deep42thought: so I should add something to the install file

Reading the log again, I'm not sure anymore, that my conclusion was right.

Can you please:
a) remove the system user upon removal of the package or
b) tell me, how to achieve auto-removal without packager intervention?

Cheers,
deepthought