#!env raku

role RA {
    method t () { callsame(); "RA".say; }
}

role RB {
    method t () { callsame(); "RB".say; }
}

my $c = anon class :: { method t () { "c".say; } };

for RA, RB -> $r {
    $c = $c but $r;
}

$c.^roles.say;

$c.new.t;