It's true that you need to remove cycles before you can create a tree, but acyclic graphs are still graphs (and most relevantly they're probably the kind of gra

It's true that you need to remove cycles before you can create a tree, but acyclic graphs are still graphs (and most relevantly they're probably the kind of graph you want your config to be). And YAML actually can contain cycles, so even if you only want to consider cyclic graphs, YAML still qualifies.