Dotfiles are lost in copy when using the same module multiple times

[lesteenman]

Terraform Version

Terraform v1.11.4
on darwin_arm64

Terraform Configuration Files

Given a terraform module at bitbucket.org:some/internal-project:

module "module_copy_1" {
  source = "git::git@bitbucket.org:our-organization/parent-project?ref=2.8.0"

  # Properties
}

module "module_copy_2" {
  source = "git::git@bitbucket.org:our-organization/parent-project?ref=2.8.0"

  # Properties
}

Where parent-project has the following module:

module "internal_project_release_5_0_6" {
  source             = "git::git@bitbucket.org:our-organization/internal-project?ref=5.0.6"
  upload_prefix = "releases/5.0.6"
}

And our-organization/internal-project has:

resource "qbee_filemanager_file" "some_hidden_file" {
  path        = "${var.upload_prefix}/.update"
  sourcefile  = "${path.module}/files/shared/.update"
  file_sha256 = filesha256("${path.module}/files/shared/.update")
}

Debug Output

The relevant part of the debug output, where this module is copied:

2025-04-15T12:59:36.376+0200 [DEBUG] Module installer: begin module_copy_1.internal_project_release_5_0_6
2025-04-15T12:59:36.376+0200 [TRACE] ModuleInstaller: module_copy_1.internal_project_release_5_0_6 is not yet installed
2025-04-15T12:59:36.376+0200 [TRACE] ModuleInstaller: cleaning directory .terraform/modules/module_copy_1.internal_project_release_5_0_6 prior to install of module_copy_1.internal_project_release_5_0_6
2025-04-15T12:59:36.376+0200 [TRACE] ModuleInstaller: module_copy_1.internal_project_release_5_0_6 address "git::ssh://git@bitbucket.org/our-organization/internal-project?ref=5.0.6" will be handled by go-getter
Downloading git::ssh://git@bitbucket.org/our-organization/internal-project?ref=5.0.6 for module_copy_1.internal_project_release_5_0_6...
2025-04-15T12:59:36.376+0200 [TRACE] getmodules: fetching "git::ssh://git@bitbucket.org/our-organization/internal-project?ref=5.0.6" to ".terraform/modules/module_copy_1.internal_project_release_5_0_6"
2025-04-15T12:59:42.533+0200 [TRACE] ModuleInstaller: module_copy_1.internal_project_release_5_0_6 "git::ssh://git@bitbucket.org/our-organization/internal-project?ref=5.0.6" was downloaded to .terraform/modules/module_copy_1.internal_project_release_5_0_6
2025-04-15T12:59:42.538+0200 [DEBUG] Module installer: module_copy_1.internal_project_release_5_0_6 installed at .terraform/modules/module_copy_1.internal_project_release_5_0_6
- module_copy_1.internal_project_release_5_0_6 in .terraform/modules/module_copy_1.internal_project_release_5_0_6

...

2025-04-15T13:00:11.527+0200 [TRACE] ModuleInstaller: cleaning directory .terraform/modules/module_copy_2.internal_project_release_5_0_6 prior to install of module_copy_2.internal_project_release_5_0_6
2025-04-15T13:00:11.527+0200 [TRACE] ModuleInstaller: module_copy_2.internal_project_release_5_0_6 address "git::ssh://git@bitbucket.org/our-organization/internal-project?ref=5.0.6" will be handled by go-getter
Downloading git::ssh://git@bitbucket.org/our-organization/internal-project?ref=5.0.6 for module_copy_2.internal_project_release_5_0_6...
2025-04-15T13:00:11.527+0200 [TRACE] getmodules: copying previous install of "git::ssh://git@bitbucket.org/our-organization/internal-project?ref=5.0.6" from .terraform/modules/module_copy_1.internal_project_release_5_0_6 to .terraform/modules/module_copy_2.internal_project_release_5_0_6
2025-04-15T13:00:11.660+0200 [TRACE] ModuleInstaller: module_copy_2.internal_project_release_5_0_6 "git::ssh://git@bitbucket.org/our-organization/internal-project?ref=5.0.6" was downloaded to .terraform/modules/module_copy_2.internal_project_release_5_0_6
2025-04-15T13:00:11.664+0200 [DEBUG] Module installer: module_copy_2.internal_project_release_5_0_6 installed at .terraform/modules/module_copy_2.internal_project_release_5_0_6
- module_copy_2.internal_project_release_5_0_6 in .terraform/modules/module_copy_2.internal_project_release_5_0_6

Expected Behavior

The hidden file in our internal-project/files/.update should be present for both module installations. I want to either force Terraform to not copy existing modules and download each time, or ideally, correctly use the cached directory and not ignore dot-files.

Actual Behavior

The file starting with a . is only present for the first module downloaded. The second module instead copies the installed module, as specified in

terraform/internal/getmodules/getter.go

Line 125 in c161997

if prevDir, exists := g[packageAddr]; exists {

, ignoring the dot-files, as mentioned in

terraform/internal/copy/copy_dir.go

Line 31 in c161997

// Any "dot files" it encounters along the way are skipped, even on platforms

.

Steps to Reproduce

1. terraform init
2. terraform plan

The plan will fail since the dot-file does not exist, making the sha256 method crash.

Additional Context

No response

References

No response

Generative AI / LLM assisted development?

No response