nixos/manifests/dashboard/chart.yaml

apiVersion: source.toolkit.fluxcd.io/v1
kind: HelmRepository
metadata:
  name: headlamp
spec:
  url: "https://kubernetes-sigs.github.io/headlamp/"
  interval: "24h"
---
apiVersion: helm.toolkit.fluxcd.io/v2
kind: HelmRelease
metadata:
  name: headlamp
spec:
  interval: "24h"
  chart:
    spec:
      chart: headlamp
      sourceRef:
        kind: HelmRepository
        name: headlamp
      interval: "24h"