chore: import upstream snapshot with attribution

tools/build_rust.py

@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
+
+"""Shared setuptools-rust build entry for Rust artifacts."""
+
+from __future__ import annotations
+
+import os
+import sys
+from pathlib import Path
+
+from setuptools import setup
+from setuptools_rust import Binding, RustExtension
+
+ROOT_DIR = Path(__file__).resolve().parents[1]
+
+
+def rust_extensions(*, optional: bool = False) -> list[RustExtension]:
+    return [
+        RustExtension(
+            target="vllm.vllm-rs",
+            path="rust/src/cmd/Cargo.toml",
+            args=["--bin", "vllm-rs"],
+            features=["native-tls-vendored"],
+            binding=Binding.Exec,
+            optional=optional,
+        ),
+        RustExtension(
+            target="vllm._rust_tool_parser",
+            path="rust/src/parser/python/Cargo.toml",
+            features=["pyo3/abi3-py38"],
+            binding=Binding.PyO3,
+            optional=optional,
+            py_limited_api=True,
+        ),
+    ]
+
+
+def rust_py_extension_module_names() -> list[str]:
+    module_names = []
+    for extension in rust_extensions():
+        if extension.binding != Binding.PyO3:
+            continue
+
+        for target_name in extension.target.values():
+            if target_name.startswith("vllm._rust_"):
+                module_names.append(target_name.rsplit(".", 1)[-1])
+
+    return module_names
+
+
+def build_binary(build_rust_args: list[str]) -> None:
+    os.chdir(ROOT_DIR)
+    (ROOT_DIR / "vllm").mkdir(exist_ok=True)
+    setup(
+        name="vllm-rust-frontend-build",
+        packages=[],
+        rust_extensions=rust_extensions(optional=False),
+        script_args=["build_rust", "--quiet", "--inplace", *build_rust_args],
+    )
+
+
+def main() -> None:
+    build_binary(sys.argv[1:])
+
+
+if __name__ == "__main__":
+    main()