TruffleRuby is a high-performance implementation of the Ruby programming language.
TruffleRuby aims to be fully compatible with the standard implementation of Ruby, MRI, version 2.6.5.
The Ruby language component can be added to GraalVM using the gu utility.
More information is available on the GraalVM website: http://www.graalvm.org/docs/reference-manual/languages/ruby/