terraform {
  # Terraform v1.15 is installed; the optional() object defaults used here need >= 1.3.
  required_version = ">= 1.6"

  # No cloud provider: the hosts already exist. Everything is driven over SSH by the
  # null provider's provisioners, with local/random for rendering + generated values.
  required_providers {
    null = {
      source  = "hashicorp/null"
      version = "~> 3.2"
    }
    local = {
      source  = "hashicorp/local"
      version = "~> 2.5"
    }
    random = {
      source  = "hashicorp/random"
      version = "~> 3.6"
    }
  }
}