[Pre-RFC] DNS domains as package namespaces

I think you'll have a hard time convincing people if that's your stance. Even with namespaces there can only be one json , that won't change. You can have jmillikin.github.io/json , but that's not called json , just like jmillikin_json is not called json .

The package jmillikin.github.io/json contains the crate json, whereas the package jmillikin_json contains the crate jmillikin_json.

The purpose of namespaces is to allow multiple crates with the same name to have different package names, which is a useful feature for a package registry that tries to be a central place for an entire language's library ecosystem to register packages.

All this argument amounts to is having a nicer way to make distinguishing crate names, but that's not enough motivation for a change this big.

It's not a particularly big change (see the diffstat for the linked branches in the first post) and the value of allowing more people contribute packages to the Rust ecosystem is significant.