packageRules for Terraform modules monorepo

[pdcemulator]

What would you like help with?

I would like help with my configuration

How are you running Renovate?

Self-hosted

If you're self-hosting Renovate, tell us which platform (GitHub, GitLab, etc) and which version of Renovate.

GitHub, v37.420 via Docker (later in GH Action)

Please tell us more about your question or problem

Hello,
I am new to renovate (currently user of dependabot) and I want to manage updates of Terraform modules from a monorepo and need some help configuring the packageRule for my usecase.

The modules repo has the following structure:

terraform-modules:
.
└── database
    ├── module1
    |   └── main.tf
    └── module2
        └── main.tf
└── network
    ├── module1
    │   └── main.tf
    └── module2
        └── main.tf

The modules are used like this:

module "mydb" {
  source = "[email protected]:myuser/terraform-modules.git//database/module1?ref=database/module-v1.2.3"
}
module "mynetwork" {
  source = "[email protected]:myuser/terraform-modules.git//network/module1?ref=network/module-v2.3.4"
}

The repo uses tags like database/module-v1.2.3 and network/module-v2.3.4.

I configured this packageRule with versionCompatibility, based on some discussions here.

    {
      "matchDatasources": ["github-tags"],
      "matchDepPrefixes": ["github.com/myuser/terraform-modules"],
      "matchManagers": ["terraform"],
      "versioning": "regex:^((?<compatibility>.*)-v|v*)(?<major>\\d+)\\.(?<minor>\\d+)\\.(?<patch>\\d+)$",
      "versionCompatibility": "^(?<compatibility>.*)-(?<version>.*)$"
    },

This is working as renovate finds the currently used and new version and created working PRs. But it detects the module name as part of the version and not as part of the dependency. It groups updates of multiple modules in a single pr as the dependency is the same.

How can I change the packageRule to include the module name in the dependency and not in the version?

Logs (if relevant)

Logs

renovate-1  |                  "depName": "github.com/myuser/terraform-modules",
renovate-1  |                  "depType": "module",
renovate-1  |                  "currentValue": "network/module1-v0.0.1",
renovate-1  |                  "packageName": "myuser/terraform-modules",
renovate-1  |                  "datasource": "github-tags",
renovate-1  |                  "updates": [
renovate-1  |                    {
renovate-1  |                      "bucket": "non-major",
renovate-1  |                      "newVersion": "v0.4.14",
renovate-1  |                      "newValue": "v0.4.14",
renovate-1  |                      "releaseTimestamp": "2024-03-07T15:13:49.000Z",
renovate-1  |                      "newMajor": 0,
renovate-1  |                      "newMinor": 4,
renovate-1  |                      "newPatch": 14,
renovate-1  |                      "updateType": "minor",
renovate-1  |                      "branchName": "renovate/github.com-myuser/terraform-modules-0.x"
renovate-1  |                    }
renovate-1  |                  ],
renovate-1  |                  "versioning": "semver-coerced",
renovate-1  |                  "warnings": [],
renovate-1  |                  "sourceUrl": "https://github.com/myuser/terraform-modules",
renovate-1  |                  "registryUrl": "https://github.com",
renovate-1  |                  "currentVersion": "network-module1-v0.0.1",
renovate-1  |                  "currentVersionTimestamp": "2024-04-24T07:58:17.000Z",
renovate-1  |                  "isSingleVersion": true

[pdcemulator]

Found a working solution using regex customManager. ALso need a packageRule to disable terraform manager for this path (but leave Manager enabled to get Provider updates).

  "customManagers": [
    {
      "customType": "regex",
      "datasourceTemplate": "github-tags",
      "depNameTemplate": "myuser/terraform-modules/{{depName}}",
      "fileMatch": ["^ami\.tf$"],
      "matchStrings": [
        "ref=(?<depName>(.*))-(?<currentValue>.*)\""
      ],
      "versioningTemplate": "semver",
    },
],
  "packageRules": [
    {
      "matchDepPrefixes": ["github.com/myuser/terraform-modules"],
      "matchManagers": ["terraform"],
      "enabled": false,
    },
]