Variables as inputs for other variables

Terraform
1

Hi there,

I have a variable as below, setting a list with security groups from a remote_state:

variable "instances" {
    description = "instances to be deployed"
    type        = map(object({
        ufqdn     = string
...
        secgroups  = list(string)
        }))
    default = {
        "instance-1" = {
            ufqdn     = "instance-1.domain.com"
...
            secgroups  = [ "data.terraform_remote_state.network.outputs.secgroup1", 
                          "data.terraform_remote_state.network.outputs.secgroup2", **
                         "data.terraform_remote_state.network.outputs.secgroup3"**
                        ]
    },
        "instance-2" = {
            ufqdn     = "instance-2.domain.com"
...
            secgroups  = [ "data.terraform_remote_state.network.outputs.secgroup4", 
                          "data.terraform_remote_state.network.outputs.secgroup5", 
                          "data.terraform_remote_state.network.outputs.secgroup6"
                        ]
    }
}

And the .tf consuming the variable is below:

resource "openstack_networking_port_v2" "port_instance" {
  for_each           = var.instances
  name               = "port-${each.value.ufqdn}"
  network_id         = data.terraform_remote_state.network.outputs.network_id
  security_group_ids = each.value.secgroups

Whenever I try to apply this definition, I got an error saying that the IDs weren’t found.

The problem seems that I cannot use variables as inputs.

Any clue on how to use variables as inputs for other variables?

Thanks in advance,