question about purge

[lorenzo <plorenzo@disroot.org>]

Dear Mentors,

in runit, services are defined as directories with files inside and
I'm not sure what exactly can or can't be done when a package has to
purge a service:

if the service is below /etc, files provided by the package can
be removed even if modified, but the directory can't be removed
if there are extra files inside. Correct?

if the service is below /usr (or /var or /run) instead the directory
can be removed entirely, disregarding extra files ?

what if the service is in /home, like in user-services ? maybe symlinks
and empty directories (created by the package) can be removed, but not
files?

Thanks,
Lorenzo