unsatisfied requires() should cause QT to be ignored

Adding requires(NonExistingModule) to a TEMPLATE = subdirs project skips the entire project when NonExistingModule is not available, as expected:

"Some of the required modules (NonExistingModule) are not available."
"Skipped."

Adding requires(NonExistingModule) to a regular project produces

Project ERROR: Unknown module(s) in QT: NonExistingModule