got it building

Cargo.toml

@@ -1,2 +1,12 @@
 [workspace]
 members = ["crates/*"]
+resolver = "2"
+
+[workspace.package]
+edition = "2021"
+
+[workspace.dependencies]
+clap = "4.5.11"
+pixi_manifest = { git = "https://github.com/prefix-dev/pixi", branch="main" }
+pixi_consts = { git = "https://github.com/prefix-dev/pixi", branch="main" }
+rattler-build = { git = "https://github.com/tdejager/rattler-build", branch = "feat/optional-recipe-generation", default-features = false }

crates/pixi-build-python/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "pixi-build-python"
+version = "0.1.0"
+edition.workspace = true
+
+[dependencies]
+pixi_manifest = { workspace = true }
+pixi_consts = { workspace = true }
+rattler-build = { workspace = true }
+clap = { workspace = true, features = ["derive", "env"] }

crates/pixi-build-python/src/consts.rs

@@ -0,0 +1 @@
+pub use pixi_consts::consts::*;

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

@@ -0,0 +1,21 @@
+mod consts;
+
+use std::path::PathBuf;
+
+use clap::Parser;
+
+#[allow(missing_docs)]
+#[derive(Parser)]
+#[clap(version)]
+pub struct App {
+    /// The path to the manifest file
+    #[clap(env, long, env = "PIXI_PROJECT_MANIFEST", default_value = consts::PROJECT_MANIFEST)]
+    manifest_path: PathBuf,
+}
+
+fn main() {
+    let args = App::parse();
+
+    // Load the manifest
+    eprintln!("Looking for manifest at {:?}", args.manifest_path);
+}