Don't. Use helm, kustomize or a decent code language. Dhall will constrict, slow you down, make onboarding a nightmare, and ultimately be as brittle as other alternatives (Only it's harder to find where it broke). I cannot advocate against dhall enough.

this is what I thought too. I've enjoyed working with helm and totally recommend it but was wondering if I'd missed something. A templating language and not an actual programming language seems to be the right balance for config