Upstream support for Ruby 1.9 ended, therefore we'd like to remove ruby1.9 soon. Your package depends on ruby:1.9, please use a recent ruby implementation and get this version stable, if the ruby:1.9 version had stable keywords. Further reading: https://wiki.gentoo.org/wiki/Project:Ruby/Ruby_1.9_deprecation
There was some work in progress to make it work with ruby-2.0, however development stopped about one year ago. So it is probably a good idea to treeclean the package instead.
dropped