To install MooseX::Traits::Attribute::MergeHashRef, copy and paste the appropriate command in to your terminal.
cpanm
cpanm MooseX::Traits::Attribute::MergeHashRef
CPAN shell
perl -MCPAN -e shell
install MooseX::Traits::Attribute::MergeHashRef
For more information on module installation, please visit the detailed CPAN module installation guide.