`gitlab_project` create times out waiting for default-branch protection when group uses `default_branch_protection_defaults` with empty `allowed_to_push`/`allowed_to_merge`
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## Bug Report
`gitlab_project` creation (with `initialize_with_readme = true`) always fails after the 10 min create timeout:
```
Error: error while waiting for branch main to reach 'protected' status; current status is protected false, context deadline exceeded
```
The project is created, but the resource is marked **tainted**. The next apply destroys and recreates it. On gitlab.com the destroyed project is renamed to `<path>-deletion_scheduled-<id>` and kept, so every retry burns a project; for us this also breaks follow-up automation keyed to the project path. In 3 days we accumulated 28 `-deletion_scheduled-` projects (7 consecutive failed applies × 4 projects).
Only workaround today: `tofu untaint` each project after the failure, then re-apply.
## Root cause (as far as we can tell)
`expectDefaultBranchProtection()` in `internal/provider/sdk/resource_gitlab_project.go` (v19.3.0, around L2096) decides whether to wait based on the **deprecated** integer field:
```go
return group.DefaultBranchProtection != 0, nil
```
The parent group was created by `gitlab_group` with a `default_branch_protection_defaults {}` block where `allowed_to_push` / `allowed_to_merge` end up as empty lists. For that group the Groups API returns contradictory data:
```json
"default_branch_protection": 2,
"default_branch_protection_defaults": {
"allowed_to_push": [], "allow_force_push": false, "allowed_to_merge": [],
"developer_can_initial_push": false, "code_owner_approval_required": false
}
```
GitLab honours `default_branch_protection_defaults` → the new project's `main` is **not** protected (`GET /projects/:id/repository/branches/main` → `"protected": false`, `GET /projects/:id/protected_branches` → `[]`). The provider trusts the legacy `2` → waits for protection that never comes → timeout → taint.
Sibling group with non-empty defaults (`allowed_to_push/merge: [{access_level: 40}]`) works fine: projects get `main` protected and create succeeds.
Related: #6304 (same symptom, closed 2024-05 when `default_branch_protection_defaults` was added to `gitlab_group`, but the wait check in `gitlab_project` still reads the deprecated field).
## Steps to reproduce
```hcl
resource "gitlab_group" "g" {
name = "repro"
path = "repro"
parent_id = <parent>
default_branch_protection_defaults {} # or allowed_to_push = [], allowed_to_merge = []
}
resource "gitlab_project" "p" {
name = "repro"
namespace_id = gitlab_group.g.id
initialize_with_readme = true
default_branch = "main"
}
```
`tofu apply` → `gitlab_project.p` hangs 10 min, fails with the error above, is tainted. Re-apply → destroy + recreate → same error.
## Expected behaviour
Provider should not wait when the group's effective default-branch protection is "not protected", i.e. evaluate `default_branch_protection_defaults` (e.g. no push/merge access levels ⇒ no protection) instead of / in addition to the deprecated `default_branch_protection`. Alternatively the timeout should not leave the resource tainted when the project itself was created successfully.
Possibly also a GitLab API issue: `default_branch_protection` should not report `2` when the effective defaults produce no protection.
## Additional details
- GitLab Terraform Provider version: `19.3.0` (`registry.opentofu.org/gitlabhq/gitlab`)
- OpenTofu: `1.12.1` (image `registry.gitlab.com/components/opentofu/gitlab-opentofu:4.9.0-opentofu1.12.1-alpine`)
- GitLab: gitlab.com (SaaS), top-level group `default_branch_protection: 4`
- Auth: group access token with Owner role (gitlab.com, no instance-admin access)
- `skip_wait_for_default_branch_protection` not set
<details><summary>apply log excerpt (first creation + re-run after taint)</summary>
```
### First creation (2026-09-28)
module.projects["project-a"].gitlab_project.project: Creating...
module.projects["project-c"].gitlab_project.project: Creating...
module.projects["project-b"].gitlab_project.project: Creating...
module.projects["project-d"].gitlab_project.project: Creating...
│ Error: error while waiting for branch main to reach 'protected' status; current status is protected false, context deadline exceeded
│ with module.projects["project-b"].gitlab_project.project,
│ Error: error while waiting for branch main to reach 'protected' status; current status is protected false, context deadline exceeded
│ with module.projects["project-c"].gitlab_project.project,
│ Error: error while waiting for branch main to reach 'protected' status; current status is protected false, context deadline exceeded
│ with module.projects["project-d"].gitlab_project.project,
│ Error: error while waiting for branch main to reach 'protected' status; current status is protected false, context deadline exceeded
│ with module.projects["project-a"].gitlab_project.project,
### Re-run after taint (2026-09-30)
module.projects["project-b"].gitlab_project.project: Destroying... [id=<id-b>]
module.projects["project-a"].gitlab_project.project: Destroying... [id=<id-a>]
module.projects["project-d"].gitlab_project.project: Destroying... [id=<id-d>]
module.projects["project-c"].gitlab_project.project: Destroying... [id=<id-c>]
module.projects["project-c"].gitlab_project.project: Destruction complete after 6s
module.projects["project-c"].gitlab_project.project: Creating...
module.projects["project-d"].gitlab_project.project: Destruction complete after 6s
module.projects["project-d"].gitlab_project.project: Creating...
module.projects["project-b"].gitlab_project.project: Destruction complete after 6s
module.projects["project-b"].gitlab_project.project: Creating...
module.projects["project-a"].gitlab_project.project: Destruction complete after 12s
module.projects["project-a"].gitlab_project.project: Creating...
│ Error: error while waiting for branch main to reach 'protected' status; current status is protected false, context deadline exceeded
│ with module.projects["project-d"].gitlab_project.project,
│ Error: error while waiting for branch main to reach 'protected' status; current status is protected false, context deadline exceeded
│ with module.projects["project-b"].gitlab_project.project,
│ Error: error while waiting for branch main to reach 'protected' status; current status is protected false, context deadline exceeded
│ with module.projects["project-a"].gitlab_project.project,
│ Error: error while waiting for branch main to reach 'protected' status; current status is protected false, context deadline exceeded
│ with module.projects["project-c"].gitlab_project.project,
```
</details>
<details><summary>Groups API response for the parent group</summary>
```json
{
"id": <group-id>,
"full_path": "my-org/parent-group/child-group",
"created_at": "<timestamp>",
"default_branch_protection": 2,
"default_branch_protection_defaults": {
"allowed_to_push": [],
"allow_force_push": false,
"allowed_to_merge": [],
"developer_can_initial_push": false,
"code_owner_approval_required": false
}
}
```
</details>
<details><summary>Project + default branch after creation</summary>
```json
{
"id": <project-id>,
"path_with_namespace": "my-org/parent-group/child-group/project-a",
"created_at": "<timestamp>",
"default_branch": "main",
"empty_repo": false
}
{
"name": "main",
"protected": false,
"default": true,
"developers_can_push": false,
"developers_can_merge": false
}
```
</details>
issue
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