Unrecoverable parse error for ./terragrunt.hcl: Could not find Terragrunt configuration settings in ./terragrunt.hcl

[FlorinAndrei]

It will be hard to provide a minimal repro case here. But this is a file that works with 0.90.0 (and many versions before), but fails with 0.91.1. Since the error seems specific to 0.91, and is some kind of low-level error, I hope you won't need an elaborate repro mockup.

Here is the error:

18:25:54.487 DEBUG  Evaluated 1 locals (remaining 0): s3_name_prefix
18:25:54.490 DEBUG  Exposing include block 'root'
18:25:54.490 DEBUG  Found locals block: evaluating the expressions.
18:25:54.490 DEBUG  Evaluated 2 locals (remaining 0): base_source_url, tags_stub
18:25:54.490 DEBUG  Exposing include block 'compcommon'
18:25:54.491 DEBUG  Unrecoverable parse error for ./terragrunt.hcl: Could not find Terragrunt configuration settings in ./terragrunt.hcl
18:25:54.491 WARN   Parsing errors where encountered while discovering dependencies. They were suppressed, and can be found in the debug logs.
18:25:54.491 DEBUG  Errors: %!w(*errors.joinError=&{[0x1400040ba40]})
18:25:54.491 DEBUG  Provider cache service shutting down...
18:25:54.491 DEBUG  Provider cache service shutdown complete
18:25:54.491 INFO   Shutting down Terragrunt Cache server...
18:25:54.491 INFO   Terragrunt Cache server stopped
18:25:54.491 ERROR  Could not find Terragrunt configuration settings in ./terragrunt.hcl
18:25:54.639 ERROR  Unable to determine underlying exit code, so Terragrunt will exit with error code 1

Here is the file:

terragrunt.hcl.txt

In infrastructure-modules, the folder with the source code only has a very trivial "module" that doesn't really create anything, just has inputs and outputs.

main.tf.txt

root.hcl has the usual boilerplate code.

Let me know if you need anything else.

[FlorinAndrei]

I wonder if it has something to do with the fact that some dependency outputs are lists. This is the only place where I take list elements from dependency outputs.

0.91.1 seems to work fine everywhere else.

[yhakbar]

Hey @FlorinAndrei ,

Sorry but yes, we will need exact steps for reproduction for us to tackle this.

As you can probably imagine, it's very hard for maintainers to know that we're effectively solving the same problem reported by members of the community if we're not doing the exact same thing, and getting the exact same results before fixing any underlying bugs and verifying that the bugs have been resolved.

When you can, please try to create a small, minimal fixture that we can run to get the same undesirable results you are, so we can be confident that the bug is investigated correctly and resolved.

[FlorinAndrei]

@yhakbar Fair enough. I've attached the full, self-contained code that reproduces the issue - see the archive. The code does not create state files in the cloud, or even any cloud resources - it's all local.

tg-poc.zip

How to reproduce:

Install terragrunt-v0.90.1 or later (the latest version v0.91.2 also exhibits this bug). terragrunt-v0.90.0 or older does NOT have this bug. I also have this variable in the shell: TG_PROVIDER_CACHE=1

Install tofu-v1.10.6. I use macOS 15.6.1 but I suspect it's not about the OS.

Extract the archive. cd into aws/test/services and run:

terragrunt run --all --queue-exclude-external -- plan
terragrunt run --all --queue-exclude-external -- apply

cd into aws/test/services-info and run the run --all -- plan command with debug enabled. Please note that simply running terragrunt plan will not trigger the bug - it has to be the recursive version with run --all.

The output should be as below:

% terragrunt run --all --queue-exclude-external --log-level debug --inputs-debug -- plan
11:13:57.858 DEBUG  Terragrunt Version: 0.91.2
11:13:57.858 DEBUG  Running command: tofu -version
11:13:57.858 DEBUG  Engine is not enabled, running command directly in .
11:13:57.878 DEBUG  tofu version: 1.10.6
11:13:57.879 DEBUG  Auto provider cache dir enabled: TF_PLUGIN_CACHE_DIR=../../../../../../Library/Caches/terragrunt/providers
11:13:57.879 DEBUG  Provider service initialized with cache dir: ../../../../../../Library/Caches/terragrunt/providers, user cache dir: ../../../../../../.terraform.d/plugins
11:13:57.880 INFO   Terragrunt Cache server is listening on 127.0.0.1:53846
11:13:57.880 DEBUG  Searching for stack files in .
11:13:57.880 INFO   Start Terragrunt Cache server
11:13:57.880 DEBUG  Starting provider cache service with cache dir: "../../../../../../Library/Caches/terragrunt/providers"
11:13:57.881 DEBUG  Provider cache service temp dir: /var/folders/37/rt49d8bx6sq1__mc325gbbd80000gn/T/terragrunt/providers
11:13:57.881 DEBUG  Provider cache service is ready to process requests
11:13:57.881 INFO   Using runner pool for stack .
11:13:57.882 DEBUG  Found locals block: evaluating the expressions.
11:13:57.883 DEBUG  Found locals block: evaluating the expressions.
11:13:57.883 DEBUG  Evaluated 2 locals (remaining 0): aws_provider_version, gitlab_provider_version
11:13:57.883 DEBUG  Found locals block: evaluating the expressions.
11:13:57.883 DEBUG  Evaluated 2 locals (remaining 0): aws_provider_version, gitlab_provider_version
11:13:57.883 DEBUG  Exposing include block 'root'
11:13:57.883 DEBUG  Evaluated 2 locals (remaining 0): repository_url, name
11:13:57.883 DEBUG  Found locals block: evaluating the expressions.
11:13:57.884 DEBUG  Evaluated 2 locals (remaining 0): aws_provider_version, gitlab_provider_version
11:13:57.884 DEBUG  Exposing include block 'root'
11:13:57.884 DEBUG  Found locals block: evaluating the expressions.
11:13:57.884 DEBUG  Evaluated 2 locals (remaining 0): aws_provider_version, gitlab_provider_version
11:13:57.884 DEBUG  [Partial] Included config ../../root.hcl has strategy shallow merge: merging config in (shallow).
11:13:57.884 DEBUG  Found locals block: evaluating the expressions.
11:13:57.884 DEBUG  Found locals block: evaluating the expressions.
11:13:57.884 DEBUG  Evaluated 2 locals (remaining 0): aws_provider_version, gitlab_provider_version
11:13:57.885 DEBUG  Exposing include block 'root'
11:13:57.885 DEBUG  Evaluated 2 locals (remaining 0): name, repository_url
11:13:57.885 DEBUG  Found locals block: evaluating the expressions.
11:13:57.885 DEBUG  Evaluated 2 locals (remaining 0): gitlab_provider_version, aws_provider_version
11:13:57.885 DEBUG  Exposing include block 'root'
11:13:57.885 DEBUG  Unrecoverable parse error for ./terragrunt.hcl: Could not find Terragrunt configuration settings in ./terragrunt.hcl
11:13:57.885 DEBUG  Found locals block: evaluating the expressions.
11:13:57.886 DEBUG  Found locals block: evaluating the expressions.
11:13:57.886 DEBUG  Evaluated 2 locals (remaining 0): aws_provider_version, gitlab_provider_version
11:13:57.886 DEBUG  Exposing include block 'root'
11:13:57.886 DEBUG  Evaluated 2 locals (remaining 0): repository_url, name
11:13:57.886 DEBUG  Found locals block: evaluating the expressions.
11:13:57.886 DEBUG  Evaluated 2 locals (remaining 0): aws_provider_version, gitlab_provider_version
11:13:57.886 DEBUG  Exposing include block 'root'
11:13:57.886 DEBUG  Unrecoverable parse error for ./terragrunt.hcl: Could not find Terragrunt configuration settings in ./terragrunt.hcl
11:13:57.886 WARN   Parsing errors where encountered while discovering dependencies. They were suppressed, and can be found in the debug logs.
11:13:57.886 DEBUG  Errors: %!w(*errors.joinError=&{[0x140002a1140]})
11:13:57.887 DEBUG  Provider cache service shutting down...
11:13:57.887 DEBUG  Provider cache service shutdown complete
11:13:57.887 INFO   Shutting down Terragrunt Cache server...
11:13:57.887 INFO   Terragrunt Cache server stopped
11:13:57.887 ERROR  Could not find Terragrunt configuration settings in ./terragrunt.hcl
11:13:58.013 ERROR  Unable to determine underlying exit code, so Terragrunt will exit with error code 1

[FlorinAndrei]

The repro is attached. Any news?

[yhakbar]

Hey @FlorinAndrei ,

We haven't had time to dig into this yet. Thanks for providing the steps for reproduction. We might get around to investigating this tomorrow.