Wrapper guidance

[rfsmart-bcleary]

Is your request related to a new offering from AWS?

Is this functionality available in the AWS provider for Terraform? See CHANGELOG.md, too.

• No 🛑: please wait to file a request until the functionality is avaialble in the AWS provider
• Yes ✅: please list the AWS provider version which introduced this functionality
  N/A

Is your request related to a problem? Please describe.

No, just looking for guidance on how to use wrappers with terragrunt stacks. I've created a unit that I'd like to use to create multiple security groups, some of which will need to reference each other, e.g. creating a compute security group that will allow traffic in from an ALB security group

unit "security-groups" {
  source = "${local.units_path}/security-group"
  path   = "security-groups"
  values = {
    sg_objects = {
      alb_sg  = {
        name          = "plat-infra-${local.name}-alb-sg"
        description   = "Security Group that allows global http/https traffic to ALB."
        ingress_rules = [
            "http-80-tcp",
            "https-443-tcp"
        ]
        ingress_with_cidr_blocks = [
            {
                from_port = 8443,
                to_port   = 8443,
                protocol  = "tcp",
                description = "Allows global http traffic to secondary ALB listeners.",
                cidr_blocks = "0.0.0.0/0"
            }
        ]
        egress_rules  = ["all-all"]        
      }  
      base_sg = {
        name          = "plat-infra-${local.name}-base-sg"
        description   = "Base Security Group applied to all compute instances."
        #ingress_rules = ["http-80-tcp"]
        ingress_with_source_security_group_id = [
            {
                rule = "http-80-tcp",
                source_security_group_id = dependency.wrapper.outputs.wrapper["alb_sg"].security_group_id
            }
        ]
        egress_rules  = ["all-all"]
      }
    }
  }
}

My unit terragrunt.hcl

terraform {
  source = "git::git@github.com:terraform-aws-modules/terraform-aws-security-group.git//wrappers?ref=v5.3.1"
}

include "root" {
  path = find_in_parent_folders("root.hcl")
}

dependency "vpc" {
  config_path  = "../vpc"
  mock_outputs = {
    vpc_id = "mock-vpc-id"
  }
}

dependency "wrapper" {
  config_path  = "."
  mock_outputs = {
    wrapper = "mock_wrapper"
  }
}

inputs = {
  defaults = {
    vpc_id = dependency.vpc.outputs.vpc_id
  }

  items = values.sg_objects
}

Describe the solution you'd like.

Looking for guidance on the simplest way to chain security groups.

Describe alternatives you've considered.

I've attempted a few ways to get outputs from the wrapper, but I get a no variable named error.

Additional context

None