Cue: https://cuelang.org/
Previous HN discussions:
https://news.ycombinator.com/item?id=20847943
https://news.ycombinator.com/item?id=20362951
I think Cue looks great as basically a Jsonnet 2.0, and I'd like to use it. But I also don't want to bother with a technology that isn't gaining any mindshare, so I'm on the fence.