Invalid address for Helm repo

[Xinayder]

Description

• What is the problem: cannot add https://element-hq.github.io/dendrite as a valid Helm repo
• Who is affected: k8s users
• How is this bug manifesting: HTTP 404 on https://element-hq.github.io/dendrite/index.yaml
• When did this first appear: since the move to the new repo?

Steps to reproduce

• helm repo add dendrite https://element-hq.github.io/dendrite/
• The following error message will appear:

Error: looks like "https://element-hq.github.io/dendrite" is not a valid chart repository or cannot be reached: failed to fetch https://element-hq.github.io/dendrite/index.yaml : 404 Not Found

Compared to https://matrix-org.github.io/dendrite/index.yaml, the Helm chart index file is not stored in the docs website.

[s1gtrap]

I would also appreciate some resolution of this. Currently the installation page using Helm contains the following:

Installing Dendrite using Helm

To install Dendrite using the Helm chart, you first have to add the repository using the following commands:

helm repo add dendrite https://matrix-org.github.io/dendrite/
helm repo update

which I assume is an oversight, as the latest version indexed on the helm repo to which it is referring is v0.13.8 of September 2024.

Unfortunately, swapping https://matrix-org.github.io/dendrite/ out for https://element-hq.github.io/dendrite/ doesn't work, as https://element-hq.github.io/dendrite/index.yaml doesn't exist, unlike https://matrix-org.github.io/dendrite/index.yaml which still does.

I assume this is what has been addressed by #3651 which hasn't been merged yet? Clearly a more up-to-date index.yaml is present in https://github.com/element-hq/dendrite/blob/gh-pages/docs/index.yaml as that indeces v0.14.1 of January 2025, although it's still not on parity with the latest release which is v0.15.2 of August 2025.

If helm is no longer supported, what is an alternative?