Is there any way to debug or diagnose the cause of a hang in pulumi up other than the verbose logging described here https://www.pulumi.com/docs/troubleshooting/ . Unfortunately verbose logging does not reveal the reason for my issue, where the preview hangs on reading a stack reference. I have changed the version of the stack that is referenced and compared the json stack output and see nothing of consequence other than different versions for the providers. If there is a way to know what operation this is hanging on it would be very useful.

You can also use the

--debug | -d

flag which can provide additional context.