I was kind of interested in cue earlier last year as IIRC it can be served by helm and is much much better than templating yaml. Never really got started with it. Wish they had an LSP too.
Anyway, I wanted to ask what you meant by "served by helm?" I knew about https://github.com/stefanprodan/timoni and https://github.com/holos-run/holos but I believe they are merely "inspired by helm" and not "cue for helm"