The

identifiers

argument to

aws.iam.GetPolicyDocumentStatementPrincipalArgs

expects

Sequence[str]

type, rejecting

Sequence[Output[str]]

. How can I use a resource output in generating an input to `aws.iam.GetPolicyDocumentStatementPrincipalArgs`'s

identifiers

argument?

pulumi.Output.concat

and

pulumi.Output.apply

both return

Output[str]

, an incompatible type to

str

(per mypy) that causes

panic: fatal: A failure has occurred: Unrecognized structpb value kind in RPC...

.

The approach here is to do your call to

GetPolicyDocument..()

from within an

All

or

Apply

call that coordinates and waits for the outputs you need. This will return a new output value that can be used elsewhere.

Thanks Evan!

😛artypus-8bit: Important to note that this approach is fine for getting resources. Get calls are synchronous and don't change the dependency graph. However, creating resources within Apply/All causes problems and should be avoided.