hi friends, this is probably really simple, but I'm trying to create a gcp instance and a gcp instance group using the pulumi python API. The code for this looks like:

instance = gcp.compute.Instance(...a bunch of args)
instance_group = gcp.compute.InstanceGroup(instances=[instance.self_link], ...other args)

When I run pulumi pre, I get

AttributeError: 'NoneType' object has no attribute 'self_link'

, so it looks like the instance is

None

. Are there any tips on how I debug what to do next?

Just pass the

id

of the instance to the group:

instance_group = gcp.compute.InstanceGroup(instances=[instance.id], ...other args)

See the example named

Example Usage - With instances and Named ports

in the docs: https://www.pulumi.com/registry/packages/gcp/api-docs/compute/instancegroup/