Implement Open Rust Namespace Support

Summary

Navigate the cross-team design work to get RFC #3243 implemented.

Needs contributor: This goal needs contributors to help complete the implementations in Cargo, rustc, and crates.io. The work spans multiple repositories and involves cross-team coordination.

Motivation

RFC #3243 proposed opening up namespaces in Rust to extension, managed by the package name with crates-io putting access control on who can publish to a crate’s API namespace. This covers multiple teams and needs a lot of coordination to balance the needs of each team as shown on the rustc tracking issue.

The status quo

• Cargo support is partially implemented.
• Compiler design is agreed on and partially implemented.
• There is a crates-io prototype for a previous iteration of RFC 3243 but that code base has likely diverged a lot since then.

The next 6 months

• Implement Cargo and compiler support for this to be experimented with and allow crates-io work.
• Understand what changes are needed for crates.io support, and what it will take to implement these.

The “shiny future” we are working towards

Work items over the next year

Team asks

Funding

Help wanted

Frequently asked questions