Apple Open Sources Swift Build: A Unified Build System for Swift

Apple has open-sourced Swift Build, its powerful and extensible build engine used by Xcode and Apple's own operating systems. Swift Build aims to provide a consistent and flexible cross-platform build experience for Swift projects, supporting Linux and Windows. It features robust integration with the Swift compiler, build graph optimizations for maximum parallelism, and support for a wide variety of product types. This addresses inconsistencies between different build systems used in Swift Package Manager and Xcode. This move should provide Swift developers with a more consistent and efficient development experience, laying the groundwork for future improvements and optimizations.