I have code managed by Module::Install that depends on Bio::Network::ProteinNet. Module::Install cannot automatically fetch and install the dependency. It seems that the bioperl-network modules are not indexed by CPAN at the moment. You should see the problem if you try to "install Bio::Network::ProteinNet" from the CPAN shell. My workaround is currently to "install CJFIELDS/BioPerl-Network-1.006900.tar.gz" from the CPAN shell. That works, but I cannot give a name like that to Module::Install in my Makefile.PL. Users of my code have to install bioperl-network as an additional step.
This is perl 5, version 12, subversion 4 (v5.12.4) built for x86_64-linux-gnu-thread-multi
It is being discussed on mailing list - something weird about the META.yaml file - Chris is following up. See threads here http://lists.open-bio.org/pipermail/bioperl-l/2011-October/035773.html