Swift Build: cool, but why is it better?

[johnno1962 (John Holdsworth)]

Also, will the new régime incorporate this PR to SPM?

@Jon_Shier

It was merged last week and should hopefully go out with Swift 6.1. If Apple keeps to the same release schedule as the last several years, that should mean the spring Xcode release (likely 16.3 or 16.4). The big remaining question is whether Xcode itself will properly integrate it into its builds or whether it will only work in SPM directly.