local::lib 

• Create directory

$ perl -Mlocal::lib -e ''
Attempting to create directory /home/grant/perl5
Attempting to create file /home/grant/perl5/.modulebuildrc

• Custom path:

$ perl -Mlocal::lib=~/proj-lib -e ''
Attempting to create directory /home/grant/proj-lib
Attempting to create file /home/grant/proj-lib/.modulebuildrc

use local::lib '~/proj-lib';