Created attachment 1364112 [details] The stack trace in the Eclipse console Description of problem: After the update from 4.1-7 to 4.1-8, recent Xtext versions (tried with 2.12.0 and 2.13.0) don't work anymore (java.lang.NoClassDefFoundError: net/sf/cglib/core/CodeGenerationException). Tested on both fedora 26 and 27. (Sorry for not having reported it earlier, I thought the problem was on my side, I was in a hurry and I simply downgraded guice to 4.1-7...) Version-Release number of selected component (if applicable): 4.1-8 How reproducible: Always Steps to Reproduce: 1. Start eclipse 2. Install Xtext complete SDK from update site: http://download.eclipse.org/modeling/tmf/xtext/updates/composite/releases/ 3. After restarting Eclipse, create a New Xtext Project and accept all defaults 4. In the newly-generated MyDsl.xtext right click and select "Generate Xtext Artifacts" Actual results: No artifact is generated. In the console: [main] ERROR mf.mwe2.launch.runtime.Mwe2Launcher - com.google.common.util.concurrent.ExecutionError: java.lang.NoClassDefFoundError: net/sf/cglib/core/CodeGenerationException ... Expected results: No error occurs, the artifacts are generated. Additional info: - I'm using default java-1.8.0-openjdk-1.8.0.151-1.b12.fc27.x86_64 - google-guice 4.1-7 works fine
google-guice 4.1-8 started to import cglib, but with resolution:=optional eclipse-m2e-core seems to be the only packaged plugin using guice (based on: dnf repoquery -al | grep droplets | grep guice), but it doesn't link cglib Mat, what is your opinion on this? Giulio, can you check if installing eclipse-recommenders fixes the issue?
Adding correct CC this time. Mat, what is your recommendation on the fix?
If I understand this correctly: - our guice has cglib unbundled and replaced by optional import on cglib - m2e uses guice, but doesn't symlink gclib - deps of 3rd party plugins that use guice will be satisfied by our guice bundle - it works for them because they normally bundle cglib - but cglib is not available in our installation, resulting in NoClassDefFoundError possible solutions: - change import to non-optional - add BR on cglib to m2e, so that symlink is generated by fp-p2
(In reply to Mikolaj Izdebski from comment #1) > Giulio, can you check if installing eclipse-recommenders fixes the issue? Actually I had eclipse-recommenders installed. Removing it though fixed the problem. I always thought google-guice was the problem, but actually when downgrading guice to 4.1-7 I also had to downgrade eclipse-recommenders to the previous version, but I never tried to remove it.
After updating to Oxygen.2 (eclipse-platform-4.7.2-0.2.fc27.x86_64) the problem is the same. - If I install eclipse-recommenders-2.4.10-3.fc27.noarch, I got the error I originally mentioned - If I remove it, everything works I test every time with a new eclipse configuration directory and workspace.
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