if you don't care about the dependencies hierarchy, this one-liner reports the whole stuff (change LWP for the module you want to inspect):

perl -MLWP -e 'print join("\n", keys %INC), "\n";'
[download]

cheers,
Aldo

__END__
$_=q,just perl,,s, , another ,,s,$, hacker,,print;
[download]