However, if you wish to use the New Build System, you'll need to do a bit of tweaking of the Xcode application files. Under Shared Project Settings section select ***Legacy Build System.Go to the Top Menu and Select File.Project Settings.To use the Legacy Build System which essentially ignores the SWIFT_VERSION: Xcode Project Settings Menu Item Option #1: Using the Legacy Build System for Swift 5.0 So now what? Well, you have two options: Use the Legacy Build System or hack Xcode program language support. pbxproj, Xcode will say 5.0 is not supported. So you try to set the SWIFT_VERSION, but 5.0 is not available under Build Settings and even if you try to set it manually by editing the. If you try to compile you will get an error saying no SWIFT_VERSION is set.

Go to the Top Menu and Select ***Xcode.Toolchains.

Create Your Project or Target in Xcode 10.1.

Download and Install the Swift 5.0 Development Branch Toolchain.

However, Xcode is particular about using different toolchains and development versions of Swift, so it takes a bit of tweaking to get it to work. As a frequent user of nvm and rbenv and other tools, this is great. If you use the swift package manager, I highly recommend taking a look at the swiftenv project by Kyle Fuller. The good news is you can try out these new features now by using the Swift 5.0 development branch. Of course, the biggest feature of Swift 5.0 is ABI stability.

Just as Swift 4.2 brought some interesting features, the release of Swift 5.0 will bring several as well such as raw strings, dynamically callable types, and compactMapValues for dictionaries.

Download xcode 10.1