in reply to What is the colon : in perl library.

The problem would appear to be specific to an un-satisfied RPM dependency, not a perl module - I don't have an RPM based distro on which to play, but would suggest that, rather than down-versioning what appears to be the system perl, I'd attempt to add a new perl, at your required version, at a suitably alternative installation root (using the --prefix path option) - if that's at all possible using the RPM packages.

Otherwise, I'd suggest the use of perlbrew.

A user level that continues to overstate my experience :-))