How to use Renovate to track custom git tags?

[schmatzler-jona]

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Self-hosted

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

1.0.1-AC for BitBucket Cloud

Please tell us more about your question or problem

I am using Renovate to update versions in a Makefile. Specifically, the version of OpenLDAP.

I have a line: VERSION := 2.5.19

Versions of OpenLDAP are maintained as git tags in their public GitLab repo: https://git.openldap.org/openldap/openldap/-/tags, following the pattern:
OPENLDAP_REL_ENG_2_5_19, OPENLDAP_REL_ENG_2_6_10, etc.

Manually changing my Makefile to: VERSION := OPENLDAP_REL_ENG_2_5_18 and using the following renovate.json config:

{
  "customManagers": [
    {
      "customType": "regex",
      "managerFilePatterns": ["^Makefile$"],
      "matchStrings": [
        "VERSION\\s*:=\\s*(?<currentValue>.*)"
      ],
      "datasourceTemplate": "git-tags",
      "versioningTemplate": "regex:^OPENLDAP_REL_ENG_(\\d+)_(\\d+)_(\\d+)$",
      "depNameTemplate": "https://git.openldap.org/openldap/openldap"
    }
  ]
}

Renovate successfully detects new tags and opens a PR when there is a newer version.

BUT: I'd like to keep the Makefile simple and only store the semver: VERSION := 2.5.18. Using that, I want Renovate to:

• Look up the latest OpenLDAP tags
• Parse/convert to semver
• Updating my Makefile to the semver, and not to the full tag name.

So far I have not found a way to make this work. When the current value is 2.5.18, Renovate doesn’t seem to recognize that it corresponds to OPENLDAP_REL_ENG_2_5_18.

[secustor]

The versioning regex has to match the version from the file as well as the one coming from the git-tags

Also I suggest to use named regex match groups