Comment # 1 on bug 1191272 from Walter Haidinger

On a related note:

I've applied the "fix_perl_5.34_build.patch" from the "perl modules" package to
the source rpm of 2.0.11-2.12 and rebuilt the package. All good there. This is
avoid using the "perl modules" version, i.e. switch vendors.

However, a subsequent "zypper dup" complains about a "problem" without being to
specific:
Problem: problem with the installed apache2-mod_perl-2.0.11-2.12.x86_64
 Solution 1: deinstallation of apache2-mod_perl-2.0.11-2.12.x86_64
 Solution 2: keep obsolete apache2-mod_perl-2.0.11-2.12.x86_64

How do I find which "problem" the solver apparently has?
Is it because the vendor information has been lost?
Neither zypper -vvv nor zypper.log shows any clues (to me at least).