Dummy SPM targets with no headers fail with error - fail("No header files were provided.")

[mikhailmulyar]

After updating to version 0.34 of rules_swift_package_manager some SPM libs stopped to work with following error
fail("No header files were provided.")
For example it appears when trying to add aws_sdk.
It seems in all cases it happens because those sdks create dummy targets in their Package.swift file. Those targets contain only single empty.m file and binary dependencies. Rules_swift_package_manager can't find any headers while creating module map for those targets and fail with error.
https://github.com/aws-amplify/aws-sdk-ios-spm/blob/f7e79d076556210b1aec4289cc0028d7ac785959/Package.swift#L193

Are there any options to bypass this behaviour?

[cgrindel]

Sorry for the delay. I will need to investigate to better understand what is happening.

[kurtguenther]

Was this working in a previous version of rules_swift_package_manager? @mikhailmulyar

[mikhailmulyar]

@kurtguenther Yes it worked in 0.22 at least, and 0.27 also I think

[cgrindel]

Sorry. I have not had time to investigate. If you can find where we perform the check, perhaps we can figure out what the right way forward is.