Ask HN: What are folks using for dealing with K8s manifests these days?

A few years back, my options for dealing with manifest where either templated yaml (helm) or overlayed yaml (kustomize). I've been playing around with Jsonnet, tanka, and cdk8s, and I realized there has to be something out there that works better.

I recently discovered poetry for python, and it blew my mind with how it dealt with many of the pain points with python, I guess I'm wondering if something like that exists for k8s yet.

I would love any suggestions for tools that folks have used in production (or want to, I don't care). Cheers!