also in the docs https://yarnpkg.com/en/docs/cli/self-update
We do want to have self-update working again at some point, #1139 tracks that.
Seems like it would make sense to keep the command around then and just have it issue a notice that it's currently not working.
Closing this since we want to add the command back and now that issue is triaged as high-priority.
Most helpful comment
also in the docs https://yarnpkg.com/en/docs/cli/self-update