build vs uv
build
build.pypa.io
uv
docs.astral.shSide by side
| Figure | build | uv |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | — |
| Plans published | 0 | 1 |
| Spec score · Python Package Managers | 7.8 (#11) | 8.0 (#10) |
| Integrations | The CI/CD guide gives examples for GitHub Actions, GitLab CI, CircleCI, Travis CI, Azure Pipelines, Jenkins, Docker, and tox. | The documentation lists integrations and guides for Docker, Jupyter, marimo, GitHub Actions, GitLab CI/CD, Pre-commit, PyTorch, FastAPI, and several package registries. |
| Purpose | build is a Python packaging frontend that reads pyproject.toml and invokes build backends to create distribution packages. | uv is an extremely fast Python package and project manager written in Rust. |
| Security | The installation guide says attestations are available for releases after 1.2.1 and documents verification with the gh CLI. | uv uses TLS with rustls and bundled Mozilla root certificates by default to verify HTTPS connections. |
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.