my %config = ();
share(%config);
%config = (
    'blubb' => {
        'bla' => '',
        'chrzzz' => {
            'ite' => 'ote',
        },
    },
);

my $test : shared = {
    2 => {
        xyz => [
               
     'a',
               
 ],
    },
};

use threads;
use threads::shared;
use Acme::Ref qw/deref/;

my $var : shared;
$var = "$hashref";

my $test : shared = {
    &share({
       2 => &share({
          xyz => &share([
             'a'
          ]),
       }),
    }),
};