def resolve_ollama_bin()

in src/databao_context_engine/llm/install.py [0:0]

• 13 lines of code
• 6 McCabe index (conditional complexity)

def resolve_ollama_bin() -> str:
    """
    Decide which `ollama` binary to use, in this order:

    1. DCE_OLLAMA_BIN env var, if set and exists
    2. `ollama` found on PATH
    3. Managed installation under MANAGED_OLLAMA_BIN

    Returns the full path to the binary
    """
    override = os.environ.get("DCE_OLLAMA_BIN")
    if override:
        p = Path(override).expanduser()
        if p.is_file() and os.access(p, os.X_OK):
            return str(p)

    system_ollama = shutil.which("ollama")
    if system_ollama:
        return system_ollama

    if not MANAGED_OLLAMA_BIN.exists():
        logger.info("No existing Ollama installation detected. We will download and install Ollama.")
        install_ollama_to(MANAGED_OLLAMA_BIN)

    return str(MANAGED_OLLAMA_BIN)