mirror of
https://github.com/astral-sh/uv.git
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bf4c7afe8b
uv itself is a large package with many dependencies and lots of features. To build a package using the uv build backend, you shouldn't have to download and install the entirety of uv. For platform where we don't provide wheels, it should be possible and fast to compile the uv build backend. To that end, we're introducing a python package that contains a trimmed down version of uv that only contains the build backend, with a minimal dependency tree in rust. The `uv_build` package is publish from CI just like uv itself. It is part of the workspace, but has much less dependencies for its own binary. We're using cargo deny to enforce that the network stack is not part of the dependencies. A new build profile ensure we're getting the minimum possible binary size for a rust binary. --------- Co-authored-by: Zanie Blue <contact@zanie.dev>
90 lines
3.7 KiB
Rust
90 lines
3.7 KiB
Rust
use anyhow::{bail, Context, Result};
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use std::env;
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use std::io::Write;
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use std::path::PathBuf;
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/// Entrypoint for the `uv-build` Python package.
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fn main() -> Result<()> {
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// Handrolled to avoid the large clap dependency
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let mut args = env::args_os();
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// Skip the name of the binary
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args.next();
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let command = args
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.next()
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.context("Missing command")?
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.to_str()
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.context("Invalid non-UTF8 command")?
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.to_string();
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match command.as_str() {
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"build-sdist" => {
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let sdist_directory = PathBuf::from(args.next().context("Missing sdist directory")?);
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let filename = uv_build_backend::build_source_dist(
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&env::current_dir()?,
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&sdist_directory,
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uv_version::version(),
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)?;
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// Tell the build frontend about the name of the artifact we built
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writeln!(&mut std::io::stdout(), "{filename}").context("stdout is closed")?;
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}
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"build-wheel" => {
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let wheel_directory = PathBuf::from(args.next().context("Missing wheel directory")?);
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let metadata_directory = args.next().map(PathBuf::from);
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let filename = uv_build_backend::build_wheel(
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&env::current_dir()?,
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&wheel_directory,
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metadata_directory.as_deref(),
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uv_version::version(),
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)?;
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// Tell the build frontend about the name of the artifact we built
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writeln!(&mut std::io::stdout(), "{filename}").context("stdout is closed")?;
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}
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"build-editable" => {
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let wheel_directory = PathBuf::from(args.next().context("Missing wheel directory")?);
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let metadata_directory = args.next().map(PathBuf::from);
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let filename = uv_build_backend::build_editable(
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&env::current_dir()?,
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&wheel_directory,
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metadata_directory.as_deref(),
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uv_version::version(),
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)?;
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// Tell the build frontend about the name of the artifact we built
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writeln!(&mut std::io::stdout(), "{filename}").context("stdout is closed")?;
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}
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"prepare-metadata-for-build-wheel" => {
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let wheel_directory = PathBuf::from(args.next().context("Missing wheel directory")?);
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let filename = uv_build_backend::metadata(
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&env::current_dir()?,
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&wheel_directory,
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uv_version::version(),
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)?;
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// Tell the build frontend about the name of the artifact we built
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writeln!(&mut std::io::stdout(), "{filename}").context("stdout is closed")?;
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}
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"prepare-metadata-for-build-editable" => {
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let wheel_directory = PathBuf::from(args.next().context("Missing wheel directory")?);
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let filename = uv_build_backend::metadata(
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&env::current_dir()?,
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&wheel_directory,
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uv_version::version(),
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)?;
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// Tell the build frontend about the name of the artifact we built
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writeln!(&mut std::io::stdout(), "{filename}").context("stdout is closed")?;
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}
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"--help" => {
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// This works both as redirect to use the proper uv package and as smoke test.
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writeln!(
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&mut std::io::stderr(),
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"uv_build contains only the PEP 517 build backend for uv and can't be used on the CLI. \
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Use `uv build` or another build frontend instead."
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).context("stdout is closed")?;
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}
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unknown => {
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bail!(
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"Unknown subcommand: {} (cli: {:?})",
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unknown,
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env::args_os()
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);
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}
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}
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Ok(())
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}
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