Implement uv build (#6895)

## Summary

This PR exposes uv's PEP 517 implementation via a `uv build` frontend,
such that you can use `uv build` to build source and binary
distributions (i.e., wheels and sdists) from a given directory.

There are some TODOs that I'll tackle in separate PRs:

- [x] Support building a wheel from a source distribution (rather than
from source) (#6898)
- [x] Stream the build output (#6912)

Closes #1510

Closes #1663.

crates/uv-build/src/lib.rs

@@ -80,7 +80,7 @@ static DEFAULT_BACKEND: LazyLock<Pep517Backend> = LazyLock::new(|| Pep517Backend
 pub enum Error {
     #[error(transparent)]
     Io(#[from] io::Error),
-    #[error("{} does not appear to be a Python project, as neither `pyproject.toml` nor `setup.py` is present in the directory", _0.simplified_display())]
+    #[error("{} does not appear to be a Python project, as neither `pyproject.toml` nor `setup.py` are present in the directory", _0.simplified_display())]
     InvalidSourceDist(PathBuf),
     #[error("Invalid `pyproject.toml`")]
     InvalidPyprojectToml(#[from] toml::de::Error),

crates/uv-cli/src/lib.rs

@@ -339,6 +339,21 @@ pub enum Commands {
         after_long_help = ""
     )]
     Venv(VenvArgs),
+    /// Build Python packages into source distributions and wheels.
+    ///
+    /// By default, `uv build` will build a source distribution ("sdist")
+    /// from the source directory, and a binary distribution ("wheel") from
+    /// the source distribution.
+    ///
+    /// `uv build --sdist` can be used to build only the source distribution,
+    /// `uv build --wheel` can be used to build only the binary distribution,
+    /// and `uv build --sdist --wheel` can be used to build both distributions
+    /// from source.
+    #[command(
+        after_help = "Use `uv help build` for more details.",
+        after_long_help = ""
+    )]
+    Build(BuildArgs),
     /// Manage uv's cache.
     #[command(
         after_help = "Use `uv help cache` for more details.",
@@ -1126,7 +1141,7 @@ pub struct PipSyncArgs {
 
     /// The Python interpreter into which packages should be installed.
     ///
-    /// By default, syncing requires a virtual environment. An path to an
+    /// By default, syncing requires a virtual environment. A path to an
     /// alternative Python can be provided, but it is only recommended in
     /// continuous integration (CI) environments and should be used with
     /// caution, as it can modify the system Python installation.
@@ -1408,7 +1423,7 @@ pub struct PipInstallArgs {
 
     /// The Python interpreter into which packages should be installed.
     ///
-    /// By default, installation requires a virtual environment. An path to an
+    /// By default, installation requires a virtual environment. A path to an
     /// alternative Python can be provided, but it is only recommended in
     /// continuous integration (CI) environments and should be used with
     /// caution, as it can modify the system Python installation.
@@ -1573,7 +1588,7 @@ pub struct PipUninstallArgs {
 
     /// The Python interpreter from which packages should be uninstalled.
     ///
-    /// By default, uninstallation requires a virtual environment. An path to an
+    /// By default, uninstallation requires a virtual environment. A path to an
     /// alternative Python can be provided, but it is only recommended in
     /// continuous integration (CI) environments and should be used with
     /// caution, as it can modify the system Python installation.
@@ -1924,6 +1939,55 @@ pub struct PipTreeArgs {
     pub compat_args: compat::PipGlobalCompatArgs,
 }
 
+#[derive(Args)]
+#[allow(clippy::struct_excessive_bools)]
+pub struct BuildArgs {
+    /// The directory from which distributions should be built.
+    ///
+    /// Defaults to the current working directory.
+    #[arg(value_parser = parse_file_path)]
+    pub src_dir: Option<PathBuf>,
+
+    /// The output directory to which distributions should be written.
+    ///
+    /// Defaults to the `dist` subdirectory within the source directory.
+    #[arg(long, short, value_parser = parse_file_path)]
+    pub out_dir: Option<PathBuf>,
+
+    /// Build a source distribution ("sdist") from the given directory.
+    #[arg(long)]
+    pub sdist: bool,
+
+    /// Build a binary distribution ("wheel") from the given directory.
+    #[arg(long)]
+    pub wheel: bool,
+
+    /// The Python interpreter to use for the build environment.
+    ///
+    /// By default, builds are executed in isolated virtual environments. The
+    /// discovered interpreter will be used to create those environments, and
+    /// will be symlinked or copied in depending on the platform.
+    ///
+    /// See `uv help python` to view supported request formats.
+    #[arg(
+        long,
+        short,
+        env = "UV_PYTHON",
+        verbatim_doc_comment,
+        help_heading = "Python options"
+    )]
+    pub python: Option<String>,
+
+    #[command(flatten)]
+    pub resolver: ResolverArgs,
+
+    #[command(flatten)]
+    pub build: BuildOptionsArgs,
+
+    #[command(flatten)]
+    pub refresh: RefreshArgs,
+}
+
 #[derive(Args)]
 #[allow(clippy::struct_excessive_bools)]
 pub struct VenvArgs {
@@ -2318,7 +2382,7 @@ pub struct RunArgs {
     pub installer: ResolverInstallerArgs,
 
     #[command(flatten)]
-    pub build: BuildArgs,
+    pub build: BuildOptionsArgs,
 
     #[command(flatten)]
     pub refresh: RefreshArgs,
@@ -2452,7 +2516,7 @@ pub struct SyncArgs {
     pub installer: ResolverInstallerArgs,
 
     #[command(flatten)]
-    pub build: BuildArgs,
+    pub build: BuildOptionsArgs,
 
     #[command(flatten)]
     pub refresh: RefreshArgs,
@@ -2505,7 +2569,7 @@ pub struct LockArgs {
     pub resolver: ResolverArgs,
 
     #[command(flatten)]
-    pub build: BuildArgs,
+    pub build: BuildOptionsArgs,
 
     #[command(flatten)]
     pub refresh: RefreshArgs,
@@ -2619,7 +2683,7 @@ pub struct AddArgs {
     pub installer: ResolverInstallerArgs,
 
     #[command(flatten)]
-    pub build: BuildArgs,
+    pub build: BuildOptionsArgs,
 
     #[command(flatten)]
     pub refresh: RefreshArgs,
@@ -2688,7 +2752,7 @@ pub struct RemoveArgs {
     pub installer: ResolverInstallerArgs,
 
     #[command(flatten)]
-    pub build: BuildArgs,
+    pub build: BuildOptionsArgs,
 
     #[command(flatten)]
     pub refresh: RefreshArgs,
@@ -2748,7 +2812,7 @@ pub struct TreeArgs {
     pub frozen: bool,
 
     #[command(flatten)]
-    pub build: BuildArgs,
+    pub build: BuildOptionsArgs,
 
     #[command(flatten)]
     pub resolver: ResolverArgs,
@@ -2853,7 +2917,7 @@ pub struct ExportArgs {
     pub resolver: ResolverArgs,
 
     #[command(flatten)]
-    pub build: BuildArgs,
+    pub build: BuildOptionsArgs,
 
     #[command(flatten)]
     pub refresh: RefreshArgs,
@@ -3000,7 +3064,7 @@ pub struct ToolRunArgs {
     pub installer: ResolverInstallerArgs,
 
     #[command(flatten)]
-    pub build: BuildArgs,
+    pub build: BuildOptionsArgs,
 
     #[command(flatten)]
     pub refresh: RefreshArgs,
@@ -3052,7 +3116,7 @@ pub struct ToolInstallArgs {
     pub installer: ResolverInstallerArgs,
 
     #[command(flatten)]
-    pub build: BuildArgs,
+    pub build: BuildOptionsArgs,
 
     #[command(flatten)]
     pub refresh: RefreshArgs,
@@ -3137,7 +3201,7 @@ pub struct ToolUpgradeArgs {
     pub installer: ResolverInstallerArgs,
 
     #[command(flatten)]
-    pub build: BuildArgs,
+    pub build: BuildOptionsArgs,
 }
 
 #[derive(Args)]
@@ -3441,7 +3505,7 @@ pub struct RefreshArgs {
 
 #[derive(Args)]
 #[allow(clippy::struct_excessive_bools)]
-pub struct BuildArgs {
+pub struct BuildOptionsArgs {
     /// Don't build source distributions.
     ///
     /// When enabled, resolving will not run arbitrary Python code. The cached wheels of

crates/uv-cli/src/options.rs

@@ -4,7 +4,8 @@ use uv_resolver::PrereleaseMode;
 use uv_settings::{PipOptions, ResolverInstallerOptions, ResolverOptions};
 
 use crate::{
-    BuildArgs, IndexArgs, InstallerArgs, Maybe, RefreshArgs, ResolverArgs, ResolverInstallerArgs,
+    BuildOptionsArgs, IndexArgs, InstallerArgs, Maybe, RefreshArgs, ResolverArgs,
+    ResolverInstallerArgs,
 };
 
 /// Given a boolean flag pair (like `--upgrade` and `--no-upgrade`), resolve the value of the flag.
@@ -206,8 +207,11 @@ impl From<IndexArgs> for PipOptions {
     }
 }
 
-/// Construct the [`ResolverOptions`] from the [`ResolverArgs`] and [`BuildArgs`].
-pub fn resolver_options(resolver_args: ResolverArgs, build_args: BuildArgs) -> ResolverOptions {
+/// Construct the [`ResolverOptions`] from the [`ResolverArgs`] and [`BuildOptionsArgs`].
+pub fn resolver_options(
+    resolver_args: ResolverArgs,
+    build_args: BuildOptionsArgs,
+) -> ResolverOptions {
     let ResolverArgs {
         index_args,
         upgrade,
@@ -228,7 +232,7 @@ pub fn resolver_options(resolver_args: ResolverArgs, build_args: BuildArgs) -> R
         no_sources,
     } = resolver_args;
 
-    let BuildArgs {
+    let BuildOptionsArgs {
         no_build,
         build,
         no_build_package,
@@ -281,10 +285,10 @@ pub fn resolver_options(resolver_args: ResolverArgs, build_args: BuildArgs) -> R
     }
 }
 
-/// Construct the [`ResolverInstallerOptions`] from the [`ResolverInstallerArgs`] and [`BuildArgs`].
+/// Construct the [`ResolverInstallerOptions`] from the [`ResolverInstallerArgs`] and [`BuildOptionsArgs`].
 pub fn resolver_installer_options(
     resolver_installer_args: ResolverInstallerArgs,
-    build_args: BuildArgs,
+    build_args: BuildOptionsArgs,
 ) -> ResolverInstallerOptions {
     let ResolverInstallerArgs {
         index_args,
@@ -311,7 +315,7 @@ pub fn resolver_installer_options(
         no_sources,
     } = resolver_installer_args;
 
-    let BuildArgs {
+    let BuildOptionsArgs {
         no_build,
         build,
         no_build_package,

crates/uv-dev/Cargo.toml

@@ -18,23 +18,16 @@ workspace = true
 [dependencies]
 distribution-filename = { workspace = true }
 distribution-types = { workspace = true }
-install-wheel-rs = { workspace = true }
 pep508_rs = { workspace = true }
 pypi-types = { workspace = true }
-uv-build = { workspace = true }
 uv-cache = { workspace = true, features = ["clap"] }
 uv-cli = { workspace = true }
 uv-client = { workspace = true }
-uv-configuration = { workspace = true }
-uv-dispatch = { workspace = true }
-uv-git = { workspace = true }
 uv-installer = { workspace = true }
 uv-macros = { workspace = true }
 uv-options-metadata = { workspace = true }
 uv-python = { workspace = true }
-uv-resolver = { workspace = true }
 uv-settings = { workspace = true, features = ["schemars"] }
-uv-types = { workspace = true }
 uv-workspace = { workspace = true, features = ["schemars"] }
 
 # Any dependencies that are exclusively used in `uv-dev` should be listed as non-workspace
@@ -44,12 +37,11 @@ anyhow = { workspace = true }
 clap = { workspace = true, features = ["derive", "wrap_help"] }
 fs-err = { workspace = true, features = ["tokio"] }
 itertools = { workspace = true }
-markdown = "0.3.0"
+markdown = { version = "0.3.0" }
 owo-colors = { workspace = true }
 poloto = { version = "19.1.2", optional = true }
 pretty_assertions = { version = "1.4.0" }
 resvg = { version = "0.29.0", optional = true }
-rustc-hash = { workspace = true }
 schemars = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }