terragrunt blocks does not take into account external modules folder

[motatoes]

consider this folder structure:

├── digger.yml
└── tf
    ├── env
    │   ├── common_vars.hcl
    │   ├── sandbox1
    │   │   ├── account_vars.hcl
    │   │   ├── environment_vars.hcl
    │   │   └── paris
    │   │       ├── region_vars.hcl
    │   │       └── s3
    │   │           └── terragrunt.hcl
    └── modules
        ├── README.md
        └── s3
            ├── README.md
            └── main.tf

and a digger.yml as follows:

generate_projects:
  blocks:
    - block_name: sandbox1
      terragrunt: true
      root_dir: "./tf/env/sandbox1/"
      include_patterns: [ "./tf/modules/**"]
      workflow: default
      workflow_file: digger_workflow.yml
    - block_name: sandbox2
      terragrunt: true
      root_dir: "./tf/env/sandbox2/"
      include_patterns: [ "./tf/modules/**"]
      workflow: default
      workflow_file: digger_workflow.yml

In this case making a PR which chaneges tf/modules/s3/main.tf should trigger changes to impacted terragrunt projects in tf/env/** directories, however it does not cause them to trigger because block search are scoped to the directory itself. We need to start supporting include/exclude for blocks in order to make digger also search blocks based on changes outside of the block scope ...

[asafhm]

Can this please be addressed?
There's a feeling that Terragrunt is somewhat a lower class citizen in digger, and that is unfortunate.