Have you seen salva's Sort::Key and Sort::Key::Maker - they don't do exactly what you're talking about, but I'm fairly sure you'll find something to like in them.

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

In reply to Re: Comparing spaceships (cmp and <=> as options) by tobyink
in thread Comparing spaceships (cmp and <=> as options) by Random_Walk

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