Take a look at cargo's contribution and architecture docs. [1] That project was hands down one of the easiest for me to get into and learn. I am a firm believer

Take a look at cargo's contribution and architecture docs. [1] That project was hands down one of the easiest for me to get into and learn. I am a firm believer in a nice architecture document that points to interesting code sections. To date, I have never encountered a UML in the wild and been satisfied. [1]: https://github.com/rust-lang/cargo/#contributing https://github.com/rust-lang/cargo/#contributing