Version 2.5.2 is available upstream. Please consider updating! It seems that version 2.5.2 is available upstream, while the latest version in the Gentoo tree is 2.5.0-r4. You think this warning is false? Read more about it here.
Ivy is a powerful dependencies manager with transitive dependencies
support and much more features.
With Ivy you define the dependencies of your module in an xml file,
called an ivy file. Then you usually ask ivy to retrieve your dependencies
to a local lib dir, and it does it for you by locating the artifacts of
your dependencies in repositories, such as ibiblio.