Groovy Compiler Switcher misbehaving and breaking various things (but mainly STS)

[kdvolder]

We've received this bug report: spring-attic/spring-ide#151

We spent a bit of time experimenting with it and as far as we can tell right now the Groovy Eclipse 'CompilerChooser' is responsible. I am vaguely familiar with that part of Greclipse (from my past life working on Greclipse) and willing to expend some effort in looking for a solution, though I have to admit, at this moment I don't have good ideas on how to fix this.

At the moment, I have seen that it breaks STS in rather severe way, I suspect other Eclipse plugins might / will also be affected but haven't seen direct evidence of that yet (other than some messages in error log pointing at egit might be getting affected).

[eric-milles]

This sounds like the same problem as issue #317. I did manage to reduce the scope of the problem to use of Groovy version other than most current. Can anyone confirm an improvement for STS?

[eric-milles]

This issue appears to be isolated to Eclipse Neon.