Support recursive resource type definitions in components

[EvanBoyle]

Maybe this is already supported? I couldn't figure out how to do it.

I have some component resource code I'm trying to port from a typescript component into a go MLC with pulumi-go-provider:

https://github.com/pulumi/pulumi-auto-deploy-old/blob/main/index.ts#L61-L76

I have a component resource AutoDeployer with input property downstream (the recursive reference). downstream is an array of AutoDeployer.

From within the component, I want to read input properties on the downstream AutoDeploy resources that get passed in and create other resources from those inputs.

export const b = new AutoDeployer("auto-deployer-b", {
    org,
    project,
    stack: "b",
    downstream: [d, e, f],

Since I could not figure out the appropriate types and pulumi struct tags, I had to change the type of downstream to be an array of stringInput which is unfortunately not as type-safe:

export const b = new AutoDeployer("auto-deployer-b", {
    org,
    project,
    stack: "b",
    downstream: [d.stackRef, e.stackRef, f.stackRef],
});

[AaronFriel]

Per internal conversation, this is likely blocked on supporting Go generics:

• [Epic] Support Go Generics pulumi#9143

This is because the particular type of recursive type desired is a list of AutoDeployer instances.