Swift Subprocess 1.0.0 reached stable release alongside Swift 6.4.
The package provides a cross-platform API for running and interacting with child processes, built on Swift concurrency. Version 1.0 drops Swift 6.1 compatibility shims and requires swift-tools-version 6.2.
Key changes: RawSpan is now the single currency type for file I/O; OutputProtocol and InputProtocol gain ~Copyable relaxation; Configuration initializer label changes from init(executing:) to init(executable:).
Subprocess was designed around Span as the currency type for file I/O and ships as part of the Swift 6.4 ecosystem alongside Wasm improvements and C++20 std::span bridging.