Eclipse 2025-09 (4.37) Source feature are empty - Sources not found in IDE

[mhuber-dev]

I noticed that "org.eclipse.platform.source.feature.group" does not contains any references to the sources as in earlier versions. In the description there is a hint that developer resources are discontinued. (?)
Where are the "source features" now? Why are they discontinued? How must I configure my target platform to get the sources?

Thank you for your help.

[merks]

Specify includeSource="true" in the target file and the resolved target content will includes all possible available sources bundles:

    <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">

[mhuber-dev]

Thank you for your fast response.