Cannot use with OpenTofu

[marefr]

Description

Thanks for a great project. Using OpenTofu with these modules seems impossible. I have currently downloaded your repository and copied all modules into my repo. But it would be very nice if I didn't have to do that. But maybe you just want to support terraform? That's also fine, but why I opened this issue to understand.

Module

flash-nodes

Module Version

1.4

Terraform Version

1.11 (opentofu)

Steps to Reproduce

1. Use the following code

terraform {
  required_version = "~> 1.11"

  required_providers {
    time = {
      source  = "registry.opentofu.org/hashicorp/time"
      version = "~> 0.13"
    }

    turingpi = {
      source  = "registry.terraform.io/freed-dev-llc/turingpi"
      version = "~> 1.4"
    }
  }
}

provider "turingpi" {
  endpoint = var.turingpi_endpoint
  username = var.turingpi_username
  password = var.turingpi_password
}

module "talos_image" {
  source  = "registry.terraform.io/freed-dev-llc/modules/turingpi//modules/talos-image"
  version = "~> 1.4"

  talos_version = var.talos_version
  architecture  = var.talos_architecture
  preset        = "longhorn"
}

2. Run tofu init

Expected Behavior

No error / should init successfully

Actual Behavior

Error: Failed to query available provider packages
│
│ Could not retrieve the list of available versions for provider freed-dev-llc/turingpi: provider registry registry.opentofu.org does not have a provider named
│ registry.opentofu.org/freed-dev-llc/turingpi
│
│ All modules should specify their required_providers so that external consumers will get the correct providers when using a module. To see which modules are
│ currently depending on freed-dev-llc/turingpi, run the following command:
│     tofu providers
│
│ If you believe this provider is missing from the registry, please submit a issue on the OpenTofu Registry https://github.com/opentofu/registry/issues/new/choose

> tofu providers
Providers required by configuration:
.
├── provider[registry.terraform.io/freed-dev-llc/turingpi] ~> 1.4
├── provider[registry.opentofu.org/hashicorp/time] ~> 0.13
├── provider[registry.opentofu.org/hashicorp/vault] ~> 5.9
├── module.talos_image
│   ├── provider[registry.opentofu.org/hashicorp/http] >= 3.0.0
│   ├── provider[terraform.io/builtin/terraform]
│   └── provider[registry.opentofu.org/hashicorp/local]
└── module.flash
    └── provider[registry.opentofu.org/freed-dev-llc/turingpi] >= 1.0.0

Problem seems to be that your modules refer to the turingpi provider in the following way:

required_providers {
    turingpi = {
      source  = "freed-dev-llc/turingpi"
    }
  }

An update to use the following should make both terraform and OpenTofu work:

required_providers {
    turingpi = {
      source  = "registry.terraform.io/freed-dev-llc/turingpi"
    }
  }

Or, to keep the existing provider reference in modules, publish freed-dev-llc/turingpi provider to OpenTofu registry, https://search.opentofu.org/docs/providers/adding.

Terraform Configuration

Error Output