GoKawiilSwift 6.4 ships with unified builds, stable Subprocess API, and faster WebAssembly
Apple's Swift language team has released Swift 6.4, which makes Swift Build the default engine in Swift Package Manager so projects compile identically on Linux, macOS, and Windows. The update also finalizes the Subprocess API at version 1.0 for cross-platform process management, expands C++ and Java interoperability, and speeds up WebAssembly execution via JavaScriptKit by up to 40 times.