Just a thought---you might be able to side-step the issue and use local::lib::deps. According to the docs, by doing like this,

#!/usr/bin/perl

use strict;
use warnings;
use local::lib::deps;

my $moduledeps = local::lib::deps->new(
    base_path => '/path/to/custom/location',
);
$moduledeps->install_deps( 'My::Module', 'Dep::One', 'Dep::Two');
[download]

it'll create a directory specifically for the My::Module namespace, install the specified dependencies there, and setup local::lib there too.