Using master branch of swift-format requires you to also use the swift-DEVELOPMENT-SNAPSHOT-2019-09-26-a toolchain. Where can I acquire it? I cannot seem to find it, and trying to guess the url gives me a "Not Found" page
We just merged a much needed update today that migrates swift-format to newer SwiftSyntax APIs that were refactored a while back. This also syncs the master branch up to a much more recent development snapshot, swift-DEVELOPMENT-SNAPSHOT-2020-01-29-a.