Add a new definition to build TruffleRuby from source.

Author: nirvdrum

rubies/truffleruby-integration

@@ -0,0 +1,6 @@
+build_package_jt() {
+    unset JAVA_HOME
+    JT_IMPORTS_DONT_ASK=true ruby tool/jt.rb build --env native --install $PREFIX_PATH
+}
+
+install_git "truffleruby-integration" "https://github.com/Shopify/truffleruby.git" "integration" jt

test/shopify_ruby_definitions/test_ruby_versions.rb

@@ -9,6 +9,8 @@ def test_ALL_VERSIONS
       assert_operator(RubyVersions::ALL_VERSIONS.length, :>, 0)
 
       RubyVersions::ALL_VERSIONS.each do |v|
+        next if v.start_with?("truffleruby")
+
         assert_match(/\A(?:yjit\-)?\d+\.\d+\.\d+(?:\-[\w\-]+)?\z/, v)
       end
     end