Swift Package Manager vs uv

Swift Package Manager is a free tool for sharing Swift code as packages, using dependencies, and building, testing, documenting, and running code. A package uses a Package.swift manifest alongside source files, resources, and other assets. Packages can provide library, executable, or plugin products, and can depend on other Swift packages, system libraries, or binary dependencies. Commands such as swift build and swift test support builds and tests; package dependencies are resolved automatically when swift build or swift run is invoked. Plugins can add build capabilities or commands, including generating source files and resources, and run in a sandbox that blocks network and most file-system access unless the user approves additional permissions. Swift Package Manager works from the command line and is integrated into Xcode. It supports macOS, Linux distributions including Ubuntu, Debian, Fedora, and Amazon Linux, as well as Windows; tools on macOS can build for Apple platforms including iOS. Swift 6.4 made Swift Build the default build system in Swift Package Manager.

uv is a Python package and project manager for Linux, macOS, and Windows. Written in Rust, it manages dependencies and environments, with lockfiles and workspaces, and can install, list, pin, or uninstall Python versions. It also runs scripts with dependencies and runs or installs command-line tools from Python packages. Its pip-compatible interface is intended to cover work done by tools such as pip, pip-tools, pipx, poetry, pyenv, twine, and virtualenv, though its commands do not exactly match those tools. The documentation describes uv as 10–100x faster than pip. It supports source distributions, wheels, requirements.txt, and pylock.toml, as well as offline installation and private registry authentication. For package selection, its default first-index strategy limits candidates to the first index where a package is found. Credentials are not stored in uv.lock, but uv currently stores them in a plaintext file; native system secret storage is an experimental preview. The free plan is free.