in reply to perl 5.12 BSD portability (CPAN test result)...print

Hmmm... mysterious. Try adding this to your module:

use IO::File ();
use IO::Handle ();

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package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name

In Section Seekers of Perl Wisdom