As I'm using the Tundra build system for most of my projects I also come to realize in order to have it things working good for me I need to implement Rust support in it. This issue will be used to track the progress on it. Rust support · Issue #261 · deplinenoise/tundra · GitHub
While build.rs in Cargo gets you a bit it doesn't really reach all the way and Cargo doesn't really indent to replace a regular build system (I want to run things after Cargo is done like package up a build after done etc) This has been asked about before and from what I understand is that Cargo will not add support for "post build" scripts.