@sam_uk: Excellent question - and becoming relevant now…:
Few days ago the first Rust libraries was uploaded officially to Debian - and is now waiting for ftpmaster approval: https://ftp-master.debian.org/new.html
When core Rust libraries have entered the archive we can help the Rust team adding more libraries until we reach the Maidsafe ones.
Please consider join the Debian Rust team to help package and maintain those Rust libraries.
Maidsafe browser is based on Electron, which requires a lot of Nodejs libraries. Fortunately it seems most of them are packaged by now: https://wiki.debian.org/Javascript/Nodejs/Tasks/electron
Please consider join the Debian Javascript team and help package and maintain the remeaining dependencies for electron, and then the Maidsafe browser itself.