ivan,

I've never done the anything releated to CPAN installation other than using it. Could you do a simple check to see what was already installed before building your list?

my $match;
foreach my $candidate ( @ORDERED_LIST_OF_POSSIBLE_MODULES ) {
   eval "use $candidate;";
   next if ( $@ );
   $match = $candidate;
   last;
}
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If  $match is true, then you use that module, otherwise you are going to need to install something. Would this get you where you need to be?

- doug