Eclipse IvyDE managed libraries not exported

Issue description

IvyDE managed libraries are not exported to runnable JAR file.

Environment

• Eclipse 2022-06 M2 (4.24.0 M2)
• IvyDE 2.2.0.final-201311091524-RELEASE
• OpenJDK 17.0.3+7-Debian-1deb11u1
• Debian GNU/Linux 11 (Bullseye)

Steps for reproducing the issue

1. Clone the project:

   git clone git@github.com:haba713/eclipse-ivyde-export-issue.git
   

2. Import the cloned project into Eclipse workspace.
3. Right-click the class src/com.example/Main.java in the project tree and choose Run as → Java Application. See the output: {"key":"value"}.
4. Right-click the project and choose Export → Java → Runnable JAR file.
5. Choose the launch configuration for the class com.example.Main and Library handling: [x] Extract required libraries into generated JAR. Click Finish.
6. Try to run the generated JAR file:

   $ java -jar eclipse-ivyde-export-issue.jar
   Exception in thread "main" java.lang.NoClassDefFoundError: org/json/JSONObject
     at com.example.Main.main(Main.java:8)
   Caused by: java.lang.ClassNotFoundException: org.json.JSONObject
     at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
     at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
     at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
     ... 1 more
   

The class org.json.JSONObject and other JSON classes are not included in the JAR file even though the library is in the Ivy dependencies.

Workaround: Use JRE System Library 1.8 instead

Change Java Build Path → Libraries → JRE System Library to 1.8. After that IvyDE managed libraries are included in the generated JAR file.

The chosen Launch configuration must have JDK 1.8 as a runtime environment.

See this commit.