Yikes. In order to move beyond make's flaws we re-create make's flaws over and over. The problem with this person's build scripts aren't that they were using

Yikes. In order to move beyond make's flaws we re-create make's flaws over and over. The problem with this person's build scripts aren't that they were using YAML (though I sort of dislike YAML as well), it's that they understood neither Prolog nor Make. (Though they make a few VERY good points about how control flow in logic programming can be mind-bending if the only thing you're used to is imperative programming.)