# Pastebin 3zFvLdlH
MacBook-Pro-de-Fernando:artigo fernando$ cat Fuzz.pm6 
class Test::Fuzz {...}
my $instance = Test::Fuzz.bless;
class Test::Fuzz {
	method new {!!!}
	method instance(::?CLASS:U:) {
		$instance
	}
}

multi trait_mod:<is> (Routine $func, :$fuzzed!) is export {
	say Test::Fuzz.instance.WHERE
}
MacBook-Pro-de-Fernando:artigo fernando$ cat Sum.pm6 
unit module Sum;
use Fuzz;

sub sum($a, $b) is export is fuzzed {
	$a + $b
}
MacBook-Pro-de-Fernando:artigo fernando$ perl6 -I. -MFuzz -MSum -e 'say Test::Fuzz.instance.WHERE'
4554770032
4508165144
MacBook-Pro-de-Fernando:artigo fernando$