According to http://www.scala-lang.org/download/ version 2.12.4 is available for download
Bumped, thanks for reporting. commit bacf0700c7b9b6155fdf6554584432d85a5e3b78 Author: Mark Wright <gienah@gentoo.org> Date: Mon Jan 29 20:33:51 2018 +1100 dev-lang/scala: Bump to 2.12.4 Fix 640306, thanks to xmv for reporting. Gentoo-Bug: http://bugs.gentoo.org/640306 Package-Manager: Portage-2.3.19, Repoman-2.3.6