pulumi transform on helm chart + unknown Output<string> @ preview => wrong type for value; expected string; got interface {}

[awoimbee]

What happened?

I have a transform on a helm chart, to simplify things I made it always return {props, opts}, it causes issues at preview time.

Example

  const chart = new helm.ChartV4("brek", {
    chart: "oauth2-proxy",
    version: "7.9.0",
    repositoryOpts: {
      repo: "https://oauth2-proxy.github.io/manifests"
    },
    namespace: "default",
    values: {
      config: {
        clientID: "none",
        clientSecret: new RandomPassword("pass", { length: 8 }).result
      }
    }
  }, { provider, transforms: [({ props, opts }) => ({ props, opts })] });

Leads to

    error: kubernetes:helm.sh/v4:Chart resource 'brek' has a problem: template: oauth2-proxy/templates/secret.yaml:16:4: executing "oauth2-proxy/templates/secret.yaml" at <include "oauth2-proxy.secrets" .>: error calling include: template: oauth2-proxy/templates/_helpers.tpl:159:29: executing "oauth2-proxy.secrets" at <.Values.config.clientSecret>: wrong type for value; expected string; got interface {}

(here's the line in oauth2proxy's _helpers.tpl)

Without the transform or if the transform returns undefined, everything works.

Output of pulumi about

nope

29 │ '@pulumi/kubernetes':
30 │ specifier: ^4.19.0
31 │ version: 4.21.0([email protected])
38 │ '@pulumi/pulumi':
39 │ specifier: ^3.145.0

Additional context

No response

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[rquitales]

Thanks for reporting this issue and apologies that you're facing it. On the surface, this may appear to be a bug at the SDK level, rather than a bug in the Kubernetes provider. I'll investigate further and report back. Thanks for providing detailed repro steps on this.