Related Github issue: helmfile/helmfile#743

When using a kustomization, helmfile template fails with Error: unknown flag: --load_restrictor] Downgrading kustomize to i.e. 4.5.6 fixed it.

Steps to reproduce:

• Install Kustomize >= 5

Then:

https://github.com/hinricht/helmfile-kustomize5.git
cd helmfile-kustomize5
helmfile template

With Kustomize>=5 this error will show:

$ helmfile template
in ./helmfile.yaml: [exit status 1

COMMAND:
  kustomize -o /tmp/chartify559297089/test/monitoring/test/templates/kustomized.yaml build --load_restrictor=none --enable_alpha_plugins /tmp/chartify559297089/test/monitoring/test

OUTPUT:
  Error: unknown flag: --load_restrictor]

With Kustomize <5 helmfile template works as expected.