In the package that currently can't access it.

Actually the really right way to do it is to move %prod into a configuration module that might look like this: 

package My::Configuration;
use strict;
use Export qw(import);
our @EXPORT_OK = qw(%prod);
our %prod = (
  ...
);

1;

[download]
and then somewhere in main and in your other package insert the line: 
use My::Configuration qw(%prod);

[download]
Doing that you won't even need the our declaration because importing it declares it.

In reply to Re^3: our scope and packages by tilly
in thread our scope and packages by jfrm

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