Looks harmless enough to me. What do you think, Petr?

I cannot see a problem why newer version could break compatibility however this module is already shipped with RHEL:

# repoquery --qf '%{SOURCERPM}/%{NEVRA}' --whatprovides 'perl(Compress::Raw::Zlib)'
perl-5.10.1-129.el6.src.rpm/perl-Compress-Raw-Zlib-1:2.020-129.el6.x86_64

It's indeed packaged into EPEL6 already, I currently need an upgraded version of this package to make another perl module build correctly. Thanks for looking into this!

I don't see either perl-Compress-Raw-Zlib or perl-Compress-Raw-Bzip2 in the repository at http://dl.fedoraproject.org/pub/epel/6/x86_64/

perl-Compress-Raw-Zlib is properly deprecated in the package database for EPEL-6 but should be "dead.package"-d in git.

perl-Compress-Raw-Bzip2 isn't even deprecated in the package database for EPEL-6 so I need to retire it properly.

Given that EPEL policy forbids replacing packages from the base OS, I have no option but to close these requests as WONTFIX. You could try requesting upgrades of the RHEL packages but I'd be very surprised if that happenend. I think you may need to wait for EL-7 if you want to package something for EPEL that needs newer versions of these modules.

I've cleaned up the git branch now so it won't look as though it's an active EPEL-6 package.