uv-build

crates/uv-build/ is the Python distribution shell that ships uv's PEP 517 build backend on PyPI. The actual build logic lives in uv-build-backend; this crate is the thin wrapper that turns it into the uv_build Python package.

Purpose

When a downstream project sets

[build-system]
requires = ["uv_build"]
build-backend = "uv_build"

uv_build is what gets installed and called via PEP 517. This crate produces the wheel.

Layout

crates/uv-build/
├── Cargo.toml
├── pyproject.toml      # The PyPI metadata for uv_build
└── src/
    ├── lib.rs          # CLI shim around uv-build-backend
    └── ...

See also

• uv-build-backend — the actual logic.
• uv-build-frontend — the consumer in the uv binary.