Swift toolchain

Swift is the command-line toolchain for compiling Swift code and driving package-based workflows. It covers compiler invocations directly and, through bundled package-manager subcommands, local package creation, builds, tests, runs, and dependency resolution.

• Compile Swift sources into executables, libraries, or modules, and inspect driver behavior or target information when integrating Swift into custom build flows.
• Initialize, build, run, test, resolve, update, and edit Swift packages from a project directory without leaving the shell.
• Inspect package manifests and dependency graphs with JSON-producing subcommands for automation, validation, or follow-up tooling.

• Works well in local project loops because core flows like swift build, swift test, and swift package ... are non-interactive and scriptable.
• Structured output exists but is uneven: the compiler driver has documented parseable JSON output, and package inspection commands expose JSON, while many other commands remain text-first.
• Best fit for agents operating inside a checked-out Swift codebase rather than managing remote services or long-lived system state.

• Installing or switching toolchains is platform-specific and heavier than a single-binary CLI.
• The full swift command surface spans multiple official repos, so this repo is only part of the implementation story for package-oriented subcommands.