Dynamically create providers with for each.

[maxcbc]

Dynamically create providers with for each.

NOTE: I don't think this exist already

Current Terraform Version

0.12.26

Use-cases

We use multiple (20+) AWS accounts in our organisation. I'm currently trying to create various roles for our CI to use, which are all duplicated across different combinations of accounts. for_each for resources enables me to do this easily (thanks for this) by iterating through a list of providers.

Proposal

What I'd really like to do is the following (assume for this that aws_account_name matches the profile in my AWS config, though this could easily work with a role for each account).

locals {
  providers = [
    "aws_account_one",
    "aws_account_two",
    "aws_account_three"
  ]
}

provider "aws" {
  for_each = toset(local.providers)
  alias = each.key
  profile = each.key
  region = "eu-west-1"
}

[jbardin]

Closing to track this in #19932

[ghost]

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