rough indicator of Perl module dependencies

 perl-depends is a tool to show roughly what modules a program uses. Perl
 evaluates "use" commands at compile time, storing the information about
 loaded modules in the %INC variable. Comparing that list with the
 standard Perl modules gives an estimate of the external module
 dependencies.
 .
 The dependency information can be used to determine what external
 modules have to be installed before the program can be used.