Tagging launch_block_device_mappings volumes individually

Packer
1

I’m using the EBS builder to build an AMI, and I need to use multiple launch_block_device_mappings blocks to attach multiple EBS volumes to the instance used for building the AMI. I need to tag each of these volumes individually, applying different tags to different volumes. I see that I can use run_volume_tag and run_volume_tags, but that appears to assign a static set of tags to all volumes attached to the instance. How can I apply different tags to different volumes individually?

This probably isn’t valid config, but it shows my intention:

source "amazon-ebs" "foo" {
  ...
  launch_block_device_mappings {
      device_name = "/dev/sbd"
      tags {
        Name = "someapp-data-drive"
      }
  }
  launch_block_device_mappings {
      device_name = "/dev/sdc"
      tags {
        Name = "someapp-config-drive"
      }
  }
}

Thanks.