Since, as others have pointed out, calling a method on a blessed reference stored inside a compartment will look for the appropriate package only inside the compartment, you will have to take your reference and manually rebless it.
my $datacopy = $MySafe::data;
bless $datacopy->{person}, 'Person';
Now you can call
Person's methods on
$datacopy->{person}. You can actually rebless the reference with its own binding:
bless $datacopy->{person}, ref $datacopy->{person};
This will work, even though the package name referred to inside the compartment before, so long as
$datacopy is inside an unrestricted package, not in
MySafe. You could automate the process with a a loop like
ref($_) and bless($_, ref $_) for values %$datacopy;
Ultimately I'd return an anonymous hash from inside the configuration data:
$string = <<'EOM';
{
'person' => bless( [
42
], 'Person' )
};
EOM
my $data = Safe->new()->reval($string);
ref($_) and bless($_, ref $_) for values %$data;
Makeshifts last the longest.
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