I am trying to make my own version of autobundle. Instead of making an alphabetical list of installed modules, I want it to list the modules based on dependencies so that you don't have to install autobundle a bunch of times. Is there anything like this out there already, and if not then can someone point me to an example of how to use CPAN::Distribution::prereq_pm properly? right now I am trying to get the hash by doing the following:

$distfile = CPAN::Shell->expand("Module","$check")->cpan_file;
@result = CPAN::Shell->expand("Distribution", "$distfile")->prereq_pm;
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all it returns is an empty hash for anything I pass to it. Thanks in advance for your help.