MSYS2 vs uv
MSYS2
msys2.org
uv
docs.astral.shSide by side
| Figure | MSYS2 | uv |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| Plans published | 1 | 1 |
| Spec score · Package Managers | 7.5 (#69) | 8.9 (#4) |
| Dependency resolution | Yes | Yes |
| Offline installation | Yes | Yes |
| Package formats | tar.zst,tar.xz | source distributions,wheels,requirements.txt,pylock.toml |
| Purpose | MSYS2 provides a tool and library environment for building, installing, and running native Windows software. | uv is an extremely fast Python package and project manager written in Rust. |
| Security | MSYS2 documents generating a CycloneDX SBOM in CI, scanning it with Grype, and displaying potential vulnerabilities on its package site. | uv uses TLS with rustls and bundled Mozilla root certificates by default to verify HTTPS connections. |
| Supported platforms | Windows 10 1809+ x86_64; Windows 10 ARM64 | macOS,Linux,Windows,CPython,PyPy,Pyodide,GraalPy |
Plans
In their own words
uv
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.