Support artifacthub's 'artifacthub.io/changes' annotation for Helm release changelogs

[onedr0p]

What would you like Renovate to be able to do?

It would be neat if renovate could render a changelog from the artifacthub.io/changes field in the Helm charts's Chart.yaml

artifacthub.io/changes is explained here: https://artifacthub.io/docs/topics/annotations/helm/

This is set by either an array contained in a string:

# Chart.yaml
...
annotations:
  artifacthub.io/changes: |
    - kind: added
      description: Cool feature
      links:
        - name: Github Issue
          url: https://github.com/issue-url
        - name: Github PR
          url: https://github.com/pr-url
    - kind: fixed
      description: Minor bug
      links:
        - name: Github Issue
          url: https://github.com/issue-url
...

or by a simple string:

# Chart.yaml
...
annotations:
  artifacthub.io/changes: |
    - Added cool feature
    - Fixed minor bug
...

If you have any ideas on how this should be implemented, please tell us here.

I haven't found any other references to this artifacthub annotation.

Is this a feature you are interested in implementing yourself?

Maybe

[viceice]

Changelogs fetch needs a major rewrite before we can support new sources.

[onedr0p]

@viceice thanks for the info. Would you mind labeling this issue as manager:helm as well. Thanks again!

[viceice]

No, as changelogs are a completely different concept in renovate. There is no manager involved.

We don't plans to allow managers to intercept changelog processing.

[Preisschild]

To add some more information that might be relevant for implementation:

This would not require making requests to the artifacthub API. The changelog is written to the helm repos' index.yaml, which the helm datasource already downloads & parses here.

A short bash example with yq would be this (where the installed version is 6.4.0 and the latest version is 6.4.3) curl https://k8s-at-home.com/charts/index.yaml | yq '.entries.plex[] | select(.version <= "6.4.3") | select (.version > "6.4.0") | .annotations."artifacthub.io/changes"'.

[github-actions]

Hi there,

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The Renovate team