locals {

  vms_with_groups = {
    for hostname, host in var.vms: hostname => host if contains(keys(host),"groups")
  }
  vms_without_groups = {
    for hostname, host in var.vms: hostname => host if !contains(keys(host),"groups")
  }
  vm_groups = distinct(flatten(values(local.vms_with_groups)[*].groups))

  vms_with_provider = {
    for hostname, host in var.vms: hostname => host if contains(keys(host),"provider")
  }
  vms_without_provider = {
    for hostname, host in var.vms: hostname => host if !contains(keys(host),"provider")
  }
  vm_providers = distinct(values(local.vms_with_provider)[*].provider)

}