cargo-clippy-wrapper

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#!/usr/bin/env python3

# `cargo clippy` runs clippy-driver in place of rustc by setting

# RUSTC_WORKSPACE_WRAPPER, which cargo only applies to workspace members. A

# fair amount of first-party rust lives in crates that the top-level

# Cargo.toml excludes from the workspace (servo/, gfx/wr/, ...).

# We are passed to cargo as RUSTC_WRAPPER instead, which cargo applies to every

# crate. Cargo invokes `$RUSTC_WRAPPER $RUSTC_WORKSPACE_WRAPPER $RUSTC ...`, so

# all we have to do is splice clippy-driver in ourselves if cargo hasn't already.

# Vendored crates are compiled with `--cap-lints allow`, which stops

# clippy-driver from linting them, so they need no special casing here.

import os

import sys

args = sys.argv[1:]

workspace_wrapper = os.environ.get("RUSTC_WORKSPACE_WRAPPER")

if workspace_wrapper and os.path.splitext(os.path.basename(args[0]))[0] != "clippy-driver":

    args.insert(0, workspace_wrapper)

if sys.platform == "win32":

    # For some reason, os.execvp doesn't handle arguments properly on Windows.

    # See https://github.com/python/cpython/issues/101191 and

    # https://glandium.org/blog/?p=3051 for context.

    import subprocess

    sys.exit(subprocess.run(args).returncode)

os.execvp(args[0], args)