[xcodegen] Update help text for `--stdlib-swift`

swiftlang / swift

The Swift Programming Language

https://swift.org

Apache License 2.0

67.63k stars 10.37k forks source link

Open hamishknight opened 6 hours ago

hamishknight commented 6 hours ago

Clarify why a development snapshot is needed for stdlib Swift targets.

hamishknight commented 5 hours ago

@swift-ci please smoke test