The currently-active branch of Ruby-kit is
2.7-prime, created in early January 2021 by Funtoo, and is based on a snapshot of Gentoo Ruby ebuilds from late December 2020. At this time, the Gentoo Ruby Team was focusing on integrating support for Ruby 3.0 into Gentoo. Another notable event happening at around this time was the deprecation of Ruby 2.5 by the Ruby team itself, as it is currently in maintenance mode and nearing EOL.
2.7-prime has a number of important Funtoo changes which are documented here.
ruby-*.eclass eclasses have been forked and are stored in our
kit-fixups repository, in
core-kit/curated/eclasses, so they will end up on end-user systems inside Core-kit and will be available to all kits.
The forked eclasses are: