Is there any straight forward way to differentiate between Pulumi stack create and update? Usecase : I want to apply some condition while stack update only (not for stack create). I can achieve the same by set some variable in stack output and check for existence. But just wanted to know any relevant flag from Pulumi end?

I don't think we set anything for this but it feels like a bit of an odd case. A pulumi program should be defining a final goal state, why would that change between create and update?