Cross validation

main.tf

@@ -7,12 +7,6 @@
 locals {
   # Check only resource group was given or existing group was given but not both
   # (approach based on https://stackoverflow.com/a/66682419)
-
-  ### Check if both groups were given
-  exist_both_resource_group_cdn = !(var.resource_group_name != null && var.existing_resource_group_name != null)
-  exist_both_resource_group_msg = "only 'resource_group_name' or 'existing_resource_group_name' can be given, but both have been given"
-  # tflint-ignore: terraform_unused_declarations
-  exist_both_resource_group_check = regex("^${local.exist_both_resource_group_msg}$", (local.exist_both_resource_group_cdn ? local.exist_both_resource_group_msg : ""))
 }
 
 data "ibm_resource_group" "existing_resource_group" {

variables.tf

@@ -6,6 +6,10 @@ variable "resource_group_name" {
   type        = string
   description = "Name of the resource group to create. Required if not using existing resource group"
   default     = null
+  validation {
+    condition     = var.resource_group_name != null ? var.existing_resource_group_name == null : true
+    error_message = "only 'resource_group_name' or 'existing_resource_group_name' can be given, but both have been given"
+  }
 }
 
 variable "existing_resource_group_name" {

version.tf

@@ -1,5 +1,5 @@
 terraform {
-  required_version = ">= 1.0.0"
+  required_version = ">= 1.9.0"
 
   # Each required provider's version should be a flexible range to future proof the module's usage with upcoming minor and patch versions.
   required_providers {