terragrunt providers lock does not support caching

[davidgwps]

In my terragrunt.hcl I have the following defined for caching

terraform {
  extra_arguments "plugin_dir" {
    commands = [
      "init",
      "plan",
      "apply",
      "destroy",
      "output",
      "show"
    ]
    env_vars = {
      TF_PLUGIN_CACHE_DIR = "${find_in_parent_folders(".terraform-cache")}/plugins/gcp"
    }
  }
}

The one place this doesn't seem to work is when I run terragrunt run-all --terragrunt-non-interactive providers lock -platform=windows_amd64 -platform=darwin_amd64 -platform=darwin_arm64 -platform=linux_amd64 to regenerate the lock files.

This is super slow, as every module needs causes the dependencies to be downloaded over and over

I can't find an obvious way to enable this. Am I missing something?

[davidgwps]

we found this on the terraform side hashicorp/terraform#33837

[github-actions]

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