I have two Pulumi resources, call them

pA

and

pB

, that need to be deployed. Before

pB

can be deployed, I have some custom CLI stuff that needs to be run that depends on

pA

outputs. Is it possible to do this with Pulumi?

It is possible, but in general we don’t have a good solution for this. The main problem is that Pulumi currently doesn’t have a way to “hook in” to another resource’s lifecycle and only run something when a resource is created or replaced. It’s definitely something that we want to do, though, since it’s a killer feature.

FWIW, if the CLI bits you need to run are idempotent, you can work around this limitation using an

apply

^ true.

you can avoid running the code during a preview by early-returning from the

apply

if

pulumi.runtime.isDryRun()

is

true

Hmm, it's not idempotent by default but it might be possible to make it that way. Thanks for the pointers. This feature would indeed be killer.

Yes

How would I ensure that my CLI stuff in the

apply

completes before the

pB

?