def _install_plugins_fn(
    ctx: click.Context,
    _param,
    value: AutoInstallBehavior | None,
) -> InstallPlugins:
    if value is None:
        project: Project | None = ctx.obj["project"]
        auto_install = project and project.settings.get("auto_install")
        behavior = (
            AutoInstallBehavior.install
            if auto_install # false
            else AutoInstallBehavior.no_install
        )
    else:
        behavior = value

    # If no value flag given, it tries to get "auto_install_behaviour"
    # but I failed to see any part assigning the value
    # behavior = install, though it was no_install before
    behavior = value or ctx.obj.get(
        "auto_install_behaviour",
        AutoInstallBehavior.install,
    )
    if behavior == AutoInstallBehavior.no_install:
        return async_noop
    if behavior == AutoInstallBehavior.only_install:
        return _install_plugins_and_exit

    return install_plugins