Basic: use `NSTemporaryDirectory` to compute the temporary directory
Basic: use `NSTemporaryDirectory` to compute the temporary directory

Use `NSTemporaryDirectory` to compute the temporary directory in a
portable way.

apple/swift-package-manager,apple/swift-package-manager,abertelrud/swift-package-manager,apple/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,apple/swift-package-manager,abertelrud/swift-package-manager,apple/swift-package-manager