Log warning for unmatched configuration providers

[knutwannheden]

Current Terraform Version

0.14.6

Use-cases

When using a module the user can specify providers to be used by the module using aliases and which the module has declared proxy configuration blocks for. In case a provider is specified for which no matching (by alias) proxy configuration block exists in the module, it would be helpful if Terraform would log a warning. This can happen in a number of situations:

• there is a typo in the alias on the consumer side
• the provider alias on the module side was changed or the provider proxy was even removed
• the module inadvertently changed the proxy configuration block in a regular configuration block (e.g. by adding an empty features block)

Attempted Solutions

Proposal

As described under Use-cases I think it would make sense if the terraform command could log warnings when the configured providers don't align with the module's provider proxy configurations.

References

[jbardin]

Thanks @knutwannheden!
Closed by #27739

[ghost]

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