Here is the announcement on groovy-user:
Hi all,
We have just released the M3 of the groovy-eclipse-compiler for Maven that allows you to compile your Groovy projects in maven using groovy-eclipse. This allows you to avoid many of the pesky stub problems that happen when using gmaven. Also, initial tests are showing that groovy-eclipse-compiler is about twice as fast to compile joint Groovy-Java projects as gmaven is.
I have updated the documentation here:
http://docs.codehaus.org/display/GROOVY/Groovy-Eclipse+compiler+plugin+for+Maven
This page contains all the information that you need to get started.
It will be quite easy to convert your existing gmaven projects to use the new compiler. A few caveats, though: stubs are not generated, so tools that rely on stubs will not work, and also this does not allow you to embed Groovy scripts in your poms.
Feedback is welcome.
Thanks,
Andrew
Cosed as duplicate of
https://github.com/CodeNarc/CodeNarc/issues/87