On: YAML: probably not so great after all (2017)

[mschuster91]

That's not JSON anymore, that's pretty much enough to be considered a unique DSL. Scary that this is more or less required.

[zaphar → mschuster91]

Almost all applications evolve their config files into unique DSLs over time. They may choose a generic serialization for the DSL's AST but it will end up being an underspecified application specific DSL regardless.