As per perl-cleaner's request to file bugs for re-merged packages. I updated dev-lang/perl to v5.22.2 via 'emerge -uNDaq --with-bdeps=y --backtrack=40 @world', then ran 'perl-cleaner --all -- -aq' immediately afterwards. After completing, perl-cleaner provided the following message: --- * It seems like perl-cleaner had to rebuild some packages. * * If you have just updated your major Perl version (e.g. from 5.20.2 to 5.22.0), * and have run perl-cleaner _after_ that update, then this means most likely * that these packages are buggy. Please file a bug on http://bugs.gentoo.org/ and * report that perl-cleaner needed to reinstall the following list: * perl-core/Module-Metadata:0 * virtual/perl-Module-Metadata:0 * perl-core/CPAN-Meta:0 * virtual/perl-CPAN-Meta:0 * perl-core/JSON-PP:0 * virtual/perl-JSON-PP:0 ---
Running 'emerge -aq --depclean' after this has uninstalled the following: perl-core/JSON-PP-2.273.0 perl-core/CPAN-Meta-2.150.1 perl-core/Module-Metadata-1.0.26 virtual/perl-CPAN-Meta-Requirements-2.132.0 virtual/perl-Carp-1.360.0
*** This bug has been marked as a duplicate of bug 593788 ***