Unable to set provider error needs to be improved

[trajano]

Terraform Version

Terraform v0.11.10
+ provider.aws v1.46.0
+ provider.null v1.0.0
+ provider.random v2.0.0
+ provider.template v1.0.0

Terraform Configuration Files

provider "aws" {
  region  = "us-east-2"
  version = "~> 1.42"
}

provider "aws" {
  alias   = "development_testing"
  region  = "us-east-1"
  version = "~> 1.42"
}

data "aws_s3_bucket" "yum-mirror" {
  provider = "development_testing"
  bucket   = "yum.example"
}

or

resource "aws_s3_bucket" "yum-mirror" {
  provider = "development_testing"
  bucket   = "yum.example"
}

Debug Output

Crash Output

$ terraform plan

Error: module : provider alias must be defined by the module: development_testing

Expected Behavior

There should be no error

Actual Behavior

Error: module : provider alias must be defined by the module:

Steps to Reproduce

terraform plan

Additional Context

• The project does utilize a module I created.
• I was assuming S3 buckets are global, but I got

* data.aws_s3_bucket.yum-mirror: data.aws_s3_bucket.yum-mirror: Failed getting S3 bucket: BucketRegionError: incorrect region, the bucket is not in 'us-east-2' region
	status code: 301, request id: , host id:  Bucket: "yum.example"

Which should not be an error since it is a 301 not a 4xx or 5xx

• A workaround for the time being is to put the ARN explicitly where I need it.

References

• Error: module : provider alias must be defined by the module: #18682

[trajano]

Apparently I missed one part in the provider value. I had to prefix it with aws.

That being said the error message of

provider alias must be defined by the module: development_testing

Could be better worded as.

the provider alias is not correctly formatted (probably missing provider type for example aws.development_testing)