I have several projects with multiple stacks in my organization. But a lot of those stacks do not seem to have any infrastructure (on Azure) anymore for various reasons (maybe they were never pulumi up'd or maybe they were destroyed.) How do I (programatically since there are so many) figure out which stacks can be deleted safely. I could not find any good documentation on this. It seems that you can look for

outputs

and if there are none, then it should be free to delete. But that doesn't seem right. If there is not a programatic way, what is the best way to do this in the ui?

A simple

pulumi stack ls

(optionally with a

--cwd

pointing to a project) will list all the stacks in a project, along with the number of managed resources. Any stack with zero resources is safe to delete.

ok thanks for the info. zero resources sounds like the key to this!

I've never tried running it without the code there. You definitely need to specify the project and stack, but that's possible with command-line arguments. And refresh at least theoretically involves only the state and the cloud. But you'd have to try to find out.