Function clean

build.py:98–123

Cleans all generated files and build artifacts.

()

        print(f"{Colors.RED}❌ Command failed with exit code {e.returncode}.{Colors.RESET}")
        sys.exit(e.returncode)

def is_stale(target: Path, sources: List[Path]) -> bool:
    """Checks if the target file is older than any source file."""
    if not target.exists():
        return True
    target_mtime = target.stat().st_mtime
    for source in sources:
        if not source.exists():
             # If a source is missing, something is wrong, but we can't compare.
             # This might warrant an error or warning depending on the case.
             continue
        if source.stat().st_mtime > target_mtime:
            return True
    return False

def rustc_toolchain_fingerprint() -> str:
    """Returns the exact compiler identity that the rustc-private backend uses."""
    try:
        return subprocess.check_output(
            ["rustc", "--version", "--verbose"],
            cwd=Config.ROOT_DIR,
            text=True,
        ).strip()
    except (FileNotFoundError, subprocess.CalledProcessError) as error:
        print(f"{Colors.RED}❌ Could not query the active Rust compiler: {error}{Colors.RESET}")
        sys.exit(1)

def contains_non_runtime_classes(jar_path: Path) -> bool:
    """Checks whether a runtime JAR contains classes outside its owned package."""