[Pitch] Custom Main and Global Executors

[al45tair (Alastair Houghton)]

Please can we use

[Pitch 3] Custom Main and Global Executors

This is a third pitch for the ability to write custom default executors (both the main executor, as used for the main actor, and the global executor, used by default for Swift Task s). You can find the first pitch and the second pitch here. The draft Custom Main and Global Executors PR has been updated with the following changes following feedback from the second pitch: Clocks no longer support Instant or Duration conversion. Instead, Clock has grown run(_ job:at instant:tolerance:clock:) and…

rather than resurrecting this older pitch thread?