+1. Cue is actually very nice. I wish there's more adoption of Cue instead of most other config languages. Config languages is one of those fields where the problem looks easy and the barrier for entry is low enough that we have many different designs where they don't provide meaningful enough differences, yet the actual problem is quite difficult and subtle. Cue is one of few that has a clean theoretical foundation and looks very promising. Too bad we have YAMLs and friends everywhere.