perl5

:: Running post-transaction hooks...
(1/7) Warn about old perl modules
WARNING: '/usr/lib/perl5/site_perl' contains data from at least 1 packages which will NOT be used by the installed perl interpreter.
 -> Run the following command to get a list of affected packages: pacman -Qqo '/usr/lib/perl5/site_perl'
WARNING: '/usr/lib/perl5/vendor_perl' contains data from at least 1 packages which will NOT be used by the installed perl interpreter.
 -> Run the following command to get a list of affected packages: pacman -Qqo '/usr/lib/perl5/vendor_perl'

$ pacman -Qqo '/usr/lib/perl5/vendor_perl'
perl-unicode-map

$ pacman -Qqo '/usr/lib/perl5/site_perl'
perl-unicode-gcstring