Unable to Fetch Helm Chart from Self-hosted ChartMuseum Registry

[Piwero]

What happened?

When attempting to use a Helm chart from a self-hosted ChartMuseum registry with basic authentication through kustomize, the following error occurs:

Error: Error: looks like "https://mychartmuseumrepo.com" is not a valid chart repository or cannot be reached: failed to fetch https://mychartmuseumrepo.com/index.yaml : 401 Unauthorized
: unable to run: 'helm pull --untar --untardir apps/base/chartmuseum/charts/mywantedchart-0.0.1 --repo https://mychartmuseumrepo.com/ mywantedchart --version 0.0.1' with env=[HELM_CONFIG_HOME=/var/folders/xxxx/helm HELM_CACHE_HOME=/var/folders/f8/xxxx/helm/.cache HELM_DATA_HOME=/var/folders/f8/xxx/helm/.data] (is 'helm' installed?): exit status 1

What did you expect to happen?

I expected kustomize to successfully fetch the Helm chart from the self-hosted ChartMuseum registry using the provided basic authentication credentials.

How can we reproduce it (as minimally and precisely as possible)?

To reproduce the issue:

1. Set up a self-hosted ChartMuseum registry requiring basic authentication and push mywantedchart to it

2. Add the ChartMuseum repository to Helm using the command: helm repo add mychartmuseumrepo https://mychartmuseumrepo.com -u myuser -p mypassword.

3. Create a kustomization.yaml file with the following content:

helmCharts:
- name: mywantedchart
  repo: https://mychartmuseumrepo.com
  releaseName: chartmusesum
  version: 0.0.1
  valuesFile: values.yaml 

4. Run kustomize build . --enable-helm.

Expected output

Kustomize should successfully fetch the Helm chart from the specified repository using the provided authentication credentials.

Actual output

Kustomize fails to fetch the Helm chart from the repository and returns a 401 Unauthorized error.

Error: Error: looks like "https://mychartmuseumrepo.com" is not a valid chart repository or cannot be reached: failed to fetch https://mychartmuseumrepo.com/index.yaml : 401 Unauthorized
: unable to run: 'helm pull --untar --untardir apps/base/chartmuseum/charts/mywantedchart-0.0.1 --repo https://mychartmuseumrepo.com/ mywantedchart --version 0.0.1' with env=[HELM_CONFIG_HOME=/var/folders/xxxx/helm HELM_CACHE_HOME=/var/folders/f8/xxxx/helm/.cache HELM_DATA_HOME=/var/folders/f8/xxx/helm/.data] (is 'helm' installed?): exit status 1

Kustomize version

v5.4.1

Operating system

MacOS

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