Providers are not inherited by grandchildren

[orclev]

When you declare a provider and then import a module, the child module has access to the provider declared in the parent. If the imported child module in turn imports a module the grandchild module does not have access to the provider declared in the grandparent.

terraform-bug-repro.zip

In the reproduction sample provided there is a root TF file, and 3 modules. The root calls module 1, which calls module 2, which calls module 3, all 3 modules instantiate a resource. In order for this to execute without error a provider must be declared in the root and module 2. Module 1 inherits its provider from the root, and module 3 inherits its provider from module 2. If the provider is left out of module 2 it will attempt to instantiate a new provider rather than use the one that module one has inherited from the root.

The following issues appear to be relevant to this issue:
#3285
#1819

[scottcunningham]

Any word on this? This has stung me too recently.

[Bowbaq]

@phinze running into this today, trying to adapt some scripts from https://github.com/hashicorp/best-practices/tree/master/terraform. Somehow, on the first run it worked fine, but then I must have changed something, and now it's completely ignoring the aws provider declared in the root module. Any ETA on a fix?

[phinze]

@Bowbaq I was just reviewing issues today and this made it onto a short list to look into - you can work around it by switching to environment variable based config, but I agree it's annoying. Will see if I can get this sorted out before the 0.6.13 release. 👍

[Bowbaq]

@phinze any updates on this?

[phinze]

Sorry I haven't been able to get to this yet - just noting that this is still on my (ever-shuffling) stack! 👌

[ghost]

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