No POD found for 006_relation.t. Time to read the source?
006_relation.t
To install DBIx::Class::VirtualColumns, copy and paste the appropriate command in to your terminal.
cpanm
cpanm DBIx::Class::VirtualColumns
CPAN shell
perl -MCPAN -e shell install DBIx::Class::VirtualColumns
For more information on module installation, please visit the detailed CPAN module installation guide.