To make it easier for Eclipse users to contribute to Groovy it would be nice to get groovy(-core) to build from Eclipse again. Therefore the gradle eclipse plugin has to be configured similar to the idea plugin. (I do not know if it is possible.)
To quote CÃ©dric:
As you know, some Groovy code is written itself in Groovy, so you have to build a bootstrap compiler first, then use it to compile Groovy files which will allow a complete compiler build. Then add the fact that most of the unit tests are written in Groovy and depend on GroovyTestCase, which in turn has some dependencies on groovy-test, for example, and you might have an idea why Eclipse finds cyclic dependencies (there are cyclic dependencies, but on on the same scope (compile/test)).
So, yes, the Eclipse build will need the same kind of "hacks" than the
Maybe somebody with Eclipse know-how likes to volunteer?