Probably an unpopular opinion, but it’s been a couple of jobs that I write “just python” to generate k8s manifests, and it works really, really well.

There’s packages. You can write functions. You can write tests trivially (the output is basically a giant map that you just write out as yaml)…

I’m applying this to other areas too with great success, for example our snowflake IaC is “just python” that generates SQL. It’s great.