... before one can run perl Makefile.PL to do a new installation.  I don't think that (in this case, indirectly) requiring a non-core Perl module to run the first step of the installation after unpacking the tarball is a good idea.  I've opened bug 9328 to discuss the specifics, but I think there's a minor coding principle to discuss: should we have an explicit requirement that only core modules be necessary to start the installation?

[1] http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=9328

Regards,

Galen