How to keep variables declarations DRY

[vitorfhc]

First of all, I would like to thank you for this tool.

Problem

I am having a problem trying to keep the variables.tf file DRY. Here's my directories structure:

.
├── common.shared.yaml
└── iam
│   ├── role-01
│   │   ├── main.tf
│   │   ├── outputs.tf
│   │   ├── terragrunt.hcl
│   │   └── variables.tf
│   └── role-02
│       ├── main.tf
│       ├── outputs.tf
│       ├── terragrunt.hcl
│       └── variables.tf
└ terragrunt.hcl

In my root terragrunt.hcl:

...

locals {
  common_vars_yaml = "common.shared.yaml"
}

inputs = merge(
  yamldecode(
    file(
      find_in_parent_folders(local.common_vars_yaml)
    )
  )
)

...

Even though I import these inputs in every terragrunt.hcl for each service, I still need to repeat all variables declarations.

Example

# common.shared.yaml
obj:
  str: value

# variables.tf
variable "obj" {
  type = object({
    str = string
  })
}

The last part above (variables.tf) is copied and pasted for every service that needs variables present in common.shared.yaml.

How could I solve it? Are there any patterns or built-in functions?

[vitorfhc]

Just realized I posted in wrong repo