Using Buildship’s “Gradle Tasks” view in Eclipse, I can run tasks from a single-project configuration by double-clicking it.
When I do the same for task in a subproject in a multi-project configuration, Gradle writes a message to the Eclipse console:
FAILURE: Build failed with an exception.
We can run the task from the commandline just fine:
$ gradle :subproject:task
Obviously the task can be found, otherwise we couldn’t run it from the commandline, nor could Buildship’s Gradle Tasks view show it.