I don’t see anything about turing completeness or programmatic capabilities in their github. Any language that doesn’t have the programmatic abilities will inevitably get them hacked on when someone needs them, like what happened to yaml a bunch of times for a bunch of different software. This is one of people’s many frustrations with yaml, the fact that doing a loop, an if statement, or templating, is different for every single software that uses yaml. Even within Kubernetes, there exists different ways to do templates.
I would much rather see the language consider those things first, then see it repeat one of the biggest mistakes of yaml. This is why I am more eager for things like nickel, or even Nix as a configuration language, and am skeptical of any new standard that doesn’t have those features.
I have literally never seen yaml used as a data storage format, only as a configuration language. Ansible, Kubernetes, Home manager, netplan, and many, many other examples of yaml as a configuration language, but I cannot think of an example of yaml as a data storage format off the top of my head.
Given the:
package { name my-pkg version "1.2.3" dependencies { // Nodes can have standalone values as well as // key/value pairs. lodash "^3.2.1" optional=#true alias=underscore }
On the README of the KDL Github, it looks like KDL has a similar goal to be a configuration langauge, rather than a data storage format.