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):
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"
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
No error occurs, the artifacts are generated.
- I'm using default java-1.8.0-openjdk-220.127.116.11-1.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
- 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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