Render a public chart

Treat a public chart as an input you must pin, inspect, and validate. The fact that it works with one Helm installation does not establish compatibility with every managed renderer.

First use HelmSharp.Repo or your artifact pipeline to pull a specific chart version into a controlled directory. Then render that extracted chart exactly as you would an internal chart:

var chart = await HelmChartLoader.LoadAsync(extractedChartPath, cancellationToken);
var values = await HelmValues.BuildAsync(
    chart,
    valuesFiles: ["values.organization.yaml"],
    valuesContent: null,
    setValues: null,
    setFileValues: null,
    setStringValues: null,
    setJsonValues: null,
    cancellationToken: cancellationToken);

var renderer = new HelmTemplateRenderer(
    chart,
    releaseName: "external-dns",
    releaseNamespace: "platform",
    values: values,
    kubeVersion: "1.30.0",
    apiVersions: ["externaldns.k8s.io/v1alpha1"],
    isUpgrade: false);

var manifest = renderer.Render();

Before rolling this into a product, pin the archive digest and test the exact chart version with the exact values and capabilities you will use. If output differs from Helm, reduce the difference to a small chart/template, then compare the effective values, target capabilities, and the function matrix. HelmCompare is useful for the side-by-side part of that investigation.

The public-chart golden tests in this repository are regression evidence, not a certification that every version of every public chart is supported.