read_terragrunt_config fails if referenced file has dependencies

[mm-nv2020]

Bug report

atlantis.yaml cannot be generated if the child terragrunt.hcl uses read_terragrunt_config function on a file that contains dependencies.

To Reproduce

Summarize how to reproduce the behavior. For example:

1. clone the example repo
2. Run the command terragrunt-atlantis-config generate --output atlantis.yaml --filter child/001
3. if skip_outputs is set to true on dependency caller, there is no error

Expected behavior

No error. I expected the generated Atlantis config to look like:

automerge: false
parallel_apply: true
parallel_plan: true
projects:
- autoplan:
    enabled: false
    when_modified:
    - '*.hcl'
    - '*.tf*'
    - ../../terragrunt.hcl
  dir: child/001
version: 3

Actual behavior

INFO[0000] Could not find an old config file. Starting from scratch 
ERRO[0000] Error: Error in function call
      
ERRO[0000]   on /atlantis_read_terragrunt_config_dependency/child/001/terragrunt.hcl line 6, in locals: 
ERRO[0000]    6:   common = read_terragrunt_config(find_in_parent_folders("common-child.hcl")) 
ERRO[0000]                                              
ERRO[0000] Call to function "read_terragrunt_config" failed: The RunTerragrunt option has not been set on this TerragruntOptions object.
 
ERRO[0000] Encountered error while evaluating locals in file /atlantis_read_terragrunt_config_dependency/child/001/terragrunt.hcl 
Error: /atlantis_read_terragrunt_config_dependency/child/001/terragrunt.hcl:6,12-35: Error in function call; Call to function "read_terragrunt_config" failed: The RunTerragrunt option has not been set on this TerragruntOptions object.

Relevant Terragrunt files
a link to a repository with the smallest set of code needed to reproduce the issue:
https://github.com/kbcz1989/atlantis_read_terragrunt_config_dependency/tree/master

[cgarcia-l]

Hi, I'm currently experiencing the same issue. Unfortunately, I haven't found a useful solution so far. I'll keep looking and update here if I come across anything that works.

[Sancretor]

Hi !
I just got the same issue and will try to do some debug in the coming weeks.

[Sancretor]

It looks like it's coming from the Terragrunt old version used inside the tool, I was able to reproduce it with Terragrunt v0.54.1 directly.
I tried to upgrade this dependency but looks like too much stuff has changed in between, so it's not that easy.