RFC

You could reduce typing and clutter (single quotes and commas), use qw:

my @mods = qw(
    App::Cpan
    App::Prove
);
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Why do you have no warnings "all";? To hide warnings from strange looking code like the following?

system("corelist $d"), "\n";
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A concise description of how or why someone would use the output of your code would be helpful.