Terraform Module Version from Inside Module

module_version.tf

locals {
  # Load the module versions from the modules.json file.
  module_versions = jsondecode(file("${path.root}/.terraform/modules/modules.json"))

  # Convert the module versions data into an object,
  # with the module source path as key and version as value.
  modules_by_source = { for module in local.module_versions :
    module["Source"] => try(module["Version"], null)
  }

  # Pluck the version from the module object using the path to the module.
  # The path.module is the same as the module source.
  version = local.modules_by_source[path.module]
}