Re: [perl #75792] Unexpected nested closure circular reference (possibly a Scalar::Util::weaken issue?)

Not related to weaken.
$self is captured because the intermediate anonymous sub mentions it.
Try this instead:

sub closure_factory {
     my $self = {};

     sub {
         my $weakself = $_[0];
         weaken $weakself;
         $weakself->{coderef} = sub { die $weakself if $weakself };
     }->($self);

     $self;
}


/Bo Lindbergh