@lobingera I'm sure having a language with a schema is better than having one with none. But me, I'm a fan of small domain-specific languages. I could spot mistakes in sendmail.cf from a mile away (not literally, obviously, but you get my drift). Try that with netplan config files or ansible playbooks.

And the amount of stuff you get for free with a well-designed domain-specific language is awesome. But these days, people think of config files only as key-value stores.