feat: add pyext backend

crates/pixi-build-pyext/Cargo.toml

@@ -0,0 +1,32 @@
+[package]
+name = "pixi-build-pyext"
+version = "0.1.6"
+edition.workspace = true
+
+[dependencies]
+async-trait = { workspace = true }
+chrono = { workspace = true }
+indexmap = { workspace = true }
+miette = { workspace = true }
+minijinja = { workspace = true, features = ["json"] }
+rattler_conda_types = { workspace = true }
+rattler_package_streaming = { workspace = true }
+rattler-build = { workspace = true }
+serde = { workspace = true, features = ["derive"] }
+serde_json = { workspace = true }
+tempfile = { workspace = true }
+tokio = { workspace = true, features = ["macros"] }
+
+pixi-build-backend = { workspace = true }
+
+pixi_build_types = { workspace = true }
+pixi_manifest = { workspace = true }
+pixi_build_type_conversions = { workspace = true }
+pyo3 = { version = "0.24.1", features = ["auto-initialize"] }
+url.workspace = true
+rattler_virtual_packages.workspace = true
+fs-err = { workspace = true, features = ["tokio"] }
+
+[dev-dependencies]
+insta = { version = "1.42.1", features = ["yaml", "redactions", "filters"] }
+rstest = { workspace = true }

crates/pixi-build-pyext/pixi.toml

@@ -0,0 +1,31 @@
+[workspace]
+authors = ["Nichita Morcotilo <[email protected]>"]
+channels = ["conda-forge"]
+description = "Showcases how to build a rust project with pixi"
+name = "pixi-build-pyext"
+platforms = ["win-64", "linux-64", "osx-64", "osx-arm64"]
+preview = ["pixi-build"]
+
+[dependencies]
+pixi-build-pyext = { path = "." }
+
+[package]
+authors = ["Nichita Morcotilo <[email protected]>"]
+description = "Showcases how to build a rust project with pixi"
+name = "pixi-build-pyext"
+version = "0.1.6"
+
+[package.build]
+backend = { name = "pixi-build-rust", version = "*" }
+channels = ["https://prefix.dev/pixi-build-backends", "conda-forge"]
+
+[package.build-dependencies]
+python = "3.12.*"
+
+[package.host-dependencies]
+python = "3.12.*"
+
+[package.run-dependencies]
+# python = "3.12.*"
+# "ruamel.yaml" = "0.18.*"
+# requests = "2.32.*"

crates/pixi-build-pyext/src/config.rs

@@ -0,0 +1,12 @@
+use serde::{Deserialize, Serialize};
+use std::{collections::HashMap, path::PathBuf};
+
+#[derive(Debug, Default, Deserialize, Serialize)]
+#[serde(rename_all = "kebab-case")]
+pub struct PyExtConfig {
+    pub debug_dir: Option<PathBuf>,
+    pub python_script: PathBuf,
+
+    #[serde(flatten)]
+    pub options: HashMap<String, serde_json::Value>,
+}

crates/pixi-build-pyext/src/main.rs

@@ -0,0 +1,13 @@
+mod config;
+mod protocol;
+mod rattler_build;
+
+use protocol::RattlerBuildBackendInstantiator;
+
+#[tokio::main]
+pub async fn main() {
+    if let Err(err) = pixi_build_backend::cli::main(RattlerBuildBackendInstantiator::new).await {
+        eprintln!("{err:?}");
+        std::process::exit(1);
+    }
+}