Hi @YifeiZhuang , I was facing a similar issue, and was checking out your fix, but had trouble understanding it.

If I am not wrong, aren't these two things effectively the same?

Create a provider, so that inputFiles.files is accessed lazily during execution, when the tasks queries the fileCollection and the sources added need to be resolved.

return objectFactory.fileCollection()
        .from(providerFactory.provider { unused ->
          Set<File> files = inputFiles.files
          // use files

Use FileCollection.getElements() which is also just provides Provider for accessing inputFile.files

return objectFactory.fileCollection()
        .from(inputFiles.getElements().map { files ->
          // use files

How does the former change access inputFiles.files eagerly?