brew tap swiftxcode/swiftxcode brew install swift-xcode swift xcode link-templates # <-- important!
Images are pairs of Xcode templates and precompiled Swift packages (used by those templates). The precompilation happens when you install a Homebrew image formula (or manually using the GIT repo) and can take some time. Afterwards you can create new Xcode projects using those templates, without having to wait for the SPM bootstrap (fetch and compilation of the dependencies).
(One time) compile time: ~5 minutes. Image size: ~100MB. Fresh project setup from create to run: 3 seconds.
brew install swift-xcode-kitura swift xcode link-templates # <-- important!
If something isn't working in a Homebrew setup, check whether:
outputs anything unusual.