Is it just me or NestedText is kinda subset of YAML? I personally see very little advantage of using this over json or yaml, but having more flavors and variation is always a good thing.
Edit: forgot to mention. I personally don’t like most general data serialization formats for configuration, the one I can probably tolerate is XML, but even that I only use when it’s part of requirement. The way I usually implement program behavior configuration is through runcommands(runcom, .rc)