jruby-complete can run -S rake spec:jruby or any other rspec via rake

[mkristian]

setup jruby from git like this

mvn clean install -Pbootstrap,complete

and then execute

$ GEM_PATH=lib/ruby/gems/shared java -jar maven/jruby-complete/target/jruby-complete-9.0.0.0-SNAPSHOT.jar -S rake spec:jruby
uri:classloader:/META-INF/jruby.home/bin/jruby -X-C -S rspec spec/jruby/array_spec.rb spec/jruby/compat_spec.rb spec/jruby/math_spec.rb spec/jruby/symbol_spec.rb
uri:classloader:/META-INF/jruby.home/bin/jruby -X-C -S rspec spec/jruby/array_spec.rb spec/jruby/compat_spec.rb spec/jruby/math_spec.rb spec/jruby/symbol_spec.rb failed

also gem environment shows a "wrong" ruby executable

$ java -jar maven/jruby-complete/target/jruby-complete-9.0.0.0-SNAPSHOT.jar -S gem envRubyGems Environment:
  - RUBYGEMS VERSION: 2.4.6
  - RUBY VERSION: 2.2.2 (2015-05-21 patchlevel 0) [java]
  - INSTALLATION DIRECTORY: uri:classloader:/META-INF/jruby.home/lib/ruby/gems/shared
  - RUBY EXECUTABLE: uri:classloader:/META-INF/jruby.home/bin/jruby
  - EXECUTABLE DIRECTORY: uri:classloader:/META-INF/jruby.home/bin
  - SPEC CACHE DIRECTORY: /home/christian/.gem/specs
  - SYSTEM CONFIGURATION DIRECTORY: uri:classloader:/META-INF/jruby.home/etc
  - RUBYGEMS PLATFORMS:
    - ruby
    - universal-java-1.8
  - GEM PATHS:
     - uri:classloader:/META-INF/jruby.home/lib/ruby/gems/shared
     - /home/christian/.gem/jruby/2.2.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
     - "install" => "--no-rdoc --no-ri --env-shebang"
     - "update" => "--no-rdoc --no-ri --env-shebang"
     - "gem" => "--no-ri --no-rdoc"
     - :sources => ["http://localhost:8181/caching/", "http://localhost:8181/hosted/"]
  - REMOTE SOURCES:
     - http://localhost:8181/caching/
     - http://localhost:8181/hosted/
  - SHELL PATH:
     - /usr/local/heroku/bin
     - /home/christian/bin
     - /usr/local/sbin
     - /usr/local/bin
     - /usr/sbin
     - /usr/bin
     - /sbin
     - /bin
     - /usr/games
     - /usr/local/games

so basically the executable should be something which can be executed.