Why Mill Uses Scala for Build Configuration

The choice of Scala as the configuration language for the Mill build system, instead of alternatives like YAML or XML, has raised questions. This article addresses this by exploring three key reasons: the benefits of using a general-purpose programming language, the specific advantages of Scala, and the rationale behind leveraging the Java Virtual Machine. While Scala is a niche language, its unique properties make it particularly well-suited for configuring build systems, regardless of project size.