uv Build Backend: Faster and Smoother Python Builds

uv's native build backend, uv_build, significantly improves the speed and user experience of building Python projects. It features sensible defaults, aiming for zero configuration for most users, while offering flexible configuration to accommodate diverse project structures. uv_build currently supports pure Python code; alternative backends are needed for libraries with extension modules. Use this backend by adding `uv_build` to your `pyproject.toml` or by creating a new project with `uv init --build-backend uv`. uv_build also optimizes package name normalization, module discovery, and file inclusion/exclusion strategies, leading to more predictable and repeatable builds.