OK found this in the docs eventually

Question

OK found this in the docs eventually <https www pulumi com docs intro concepts resources explicit provider configuration> The example for a `ComponentResource` doesn t pass the `opts` to the child resources It only passes it to `super` I assume the correct explicit provider is used then for the child resources But if I pass `transformations` in `ComponentResourceOptions` are these implicitely passed to all the child resources as well

little-cartoon-10569 · Answer

As far as I know you must pass the correct provider via opts to all child resources I have always done this and never had an issue

little-cartoon-10569 · Answer

I have also always gone out of my way to make component resources be single provider only and to design the relationship between component resources accordingly

little-cartoon-10569 · Answer

So for this case instead of a single component resource with a map of two providers I might create a GCP component resource and a separate k8s component resource that has the GCP resource as in input property

little-cartoon-10569 · Answer

Not that it can t be done via two providers I just like the cleanliness and simpler resulting API It makes things like testing faking that much simpler

limited-rainbow-51650 · Answer

< little cartoon 10569> got it working using multiple providers You may only pass them to `super` not to your child resources Provider lookup seems to work correctly after that

limited-rainbow-51650 · Answer

And what a pity that you keep your ComponentResources single provider Cross tech stack is the main use case I have in mind for ComponentResource for which I am implementing the first occurrence at this very moment

little-cartoon-10569 · Answer

I may change my mind when I find a good use case Right now in you scenario I would be passing the k8s resource around and it would effectively have cross tech functionality since it can call methods on the GCP resource passed to it There would be tight cohesion since the k8s resource wraps the GCP resource and seems from the caller s pov to manipulate GCP and low coupling since the k8s resource does not do anything with GCP directly it delegates to the GCP resource for that

little-cartoon-10569 · Answer

Good to know about passing providers to super though I never tested that even though I always do it I have required explicit providers at all times A few extra lines of code here and there ツ