Project:Ruby/Ruby 2.1 deprecation
From Gentoo Wiki
Upstream support for Ruby 2.1 has ended on 31st March 2017.
- Get ruby22 package coverage up to the same level as ruby21
- Stabilize packages with ruby22 support
- Default Ruby target for new installs to ruby22
- Package.mask and remove ruby21-only packages
For further information please also check https://bugs.gentoo.org/show_bug.cgi?id=615822