That looks very nice, thank you for sharing/writing it!
Are you responsible for updating the Cargo package? It's the first time I've used Cargo and was wondering how often I should re-run it or check for updates?
You can run cargo install-update -a every now and then to check for updates. At some point in a few weeks I hope to have binaries distributed with every release, which means there will be better/faster ways to install sd than cargo.
