After a year and a half of work, the @rustlang Target Tier Policy is now official: doc.rust-lang.org/nightly/ru… Want to get an architecture, OS, or other environment into #rustlang? Here are the full requirements and specific approvers. No more process gap!

Thank you all for the effort putting this together. I guess we need to think about what the rules are for `rustup` to include a build for a target now :D (At least something more than "we don't think it'll break our release too often")