feat(init): support different init build backends

crates/uv-cli/src/lib.rs

@@ -11,7 +11,7 @@ use url::Url;
 use uv_cache::CacheArgs;
 use uv_configuration::{
  ConfigSettingEntry, ExportFormat, IndexStrategy, KeyringProviderType, PackageNameSpecifier,
- TargetTriple, TrustedHost, TrustedPublishing, VersionControlSystem,
+ ProjectBuildBackend, TargetTriple, TrustedHost, TrustedPublishing, VersionControlSystem,
 };
 use uv_distribution_types::{FlatIndexLocation, IndexUrl};
 use uv_normalize::{ExtraName, PackageName};
@@ -2461,6 +2461,13 @@ pub struct InitArgs {
  #[arg(long, value_enum, conflicts_with = "script")]
  pub vcs: Option<VersionControlSystem>,
 
+ /// Initialize a build-backend of choice for the project.
+ ///
+ /// By default, uv will use (`hatchling`). Use `--build-backend` to specify an
+ /// alternative build backend.
+ #[arg(long, value_enum, conflicts_with_all=["script", "no_package"])]
+ pub build_backend: Option<ProjectBuildBackend>,
+
  /// Do not create a `README.md` file.
  #[arg(long)]
  pub no_readme: bool,

crates/uv-configuration/src/lib.rs

@@ -13,6 +13,7 @@ pub use name_specifiers::*;
 pub use overrides::*;
 pub use package_options::*;
 pub use preview::*;
+pub use project_build_backend::*;
 pub use sources::*;
 pub use target_triple::*;
 pub use trusted_host::*;
@@ -34,6 +35,7 @@ mod name_specifiers;
 mod overrides;
 mod package_options;
 mod preview;
+mod project_build_backend;
 mod sources;
 mod target_triple;
 mod trusted_host;

crates/uv-configuration/src/project_build_backend.rs

@@ -0,0 +1,22 @@
+/// Available project build backends for use in `pyproject.toml`.
+#[derive(Clone, Copy, Debug, PartialEq, Default, serde::Deserialize)]
+#[serde(deny_unknown_fields, rename_all = "kebab-case")]
+#[cfg_attr(feature = "clap", derive(clap::ValueEnum))]
+#[cfg_attr(feature = "schemars", derive(schemars::JsonSchema))]
+pub enum ProjectBuildBackend {
+ #[default]
+ /// Use [hatchling](https://pypi.org/project/hatchling) as the project build backend.
+ Hatch,
+ /// Use [flit-core](https://pypi.org/project/flit-core) as the project build backend.
+ Flit,
+ /// Use [pdm-backend](https://pypi.org/project/pdm-backend) as the project build backend.
+ PDM,
+ /// Use [setuptools](https://pypi.org/project/setuptools) as the project build backend.
+ Setuptools,
+ /// Use [maturin](https://pypi.org/project/maturin) as the project build backend.
+ Maturin,
+ /// Use [scikit-build-core](https://pypi.org/project/scikit-build-core) as the project build backend.
+ Scikit,
+ /// Use [meson-python](https://pypi.org/project/meson-python) as the project build backend.
+ Meson,
+}