gistfile1.txt

    my %A = (
        a => {
            aa => [ 1, 2, 3, 4, 5 ],
            bb => { aaa => 1, bbb => 2 },
        },
    );

    dd %A;

    my %B = %A.deepmap(-> $c is copy {$c}); # works
    # my %B = %A.deepmap(-> $c is copy {$c.clone}); # doesn't copy the container

    %B<a><aa>[2] = 735;

    dd %A;
    dd %B;