techniques for making good Perl modules for
the CPAN site in an O'Reilly article. "When you are planning to release a module to CPAN, one of your first tasks is figure out what OS, Perl version(s), and other environments you will and will not support. Often, the answers will come from what you can and cannot support, based on the features you want to provide and the modules and libraries you have used.
Many CPAN modules, however, unintentionally limit the places where they can work. There are several steps you can take to remove those limitations.
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