Add 'use warnings' (or its equivalents) to all modules, or convince us that your favorite module is well-known enough and people can easily see the modules warn when something bad happens.

Error: Algorithm::Dependency, Algorithm::Dependency::Item, Algorithm::Dependency::Ordered, Algorithm::Dependency::Source, Algorithm::Dependency::Source::File, Algorithm::Dependency::Source::HoA, Algorithm::Dependency::Source::Invert, Algorithm::Dependency::Weight