[hgs3]

> `cargo` can farm out to the programming language of your choice

That's precisely why I like Make. Make lets you specify an input file, the name of an output file, and the shell commands necessary to generate the output file from the input file. You have the full power of the shell at your disposal which means you can farm out to core utils, Python, or whatever else suits your fancy.

I not only use Make for compiling C code, but also for compiling my websites (run "go build", minify assets, etc). You could use Make to invoke rustc if you wanted. Make is composable by design. In my opinion it _is_ a scalable build system.