Version 2.4.1 is available upstream. Please consider updating! It seems that version 2.4.1 is available upstream, while the latest version in the Gentoo tree is 2.4.0-r2. You think this warning is false? Read more about it here.
Neko is a high-level dynamically typed programming language. It can be
used as an embedded scripting language. It has been designed to provide
a common runtime for several different languages. Learning and using
Neko is very easy. You can easily extend the language with C libraries.
You can also write generators from your own language to Neko and then
use the Neko Runtime to compile, run, and access existing libraries.