Apparently that was done in the Ruby community and Github "helpfully" uploaded all the Ruby packages to the gems repository meaning all 217 forks of https://git

Apparently that was done in the Ruby community and Github "helpfully" uploaded all the Ruby packages to the gems repository meaning all 217 forks of https://github.com/httprb/http https://github.com/httprb/http became potential gems. But the underlying idea is sound: namespace and federation. Rust should ideally follow Java's solution. And it's completely forward portable: when namespacing is introduced, the crates.io/regex crates become io.crates.regex. Then you can have your com.github.majewsky.regex.