How to use the crossenv.utils.symlink function in crossenv

logger.warning("No libs in sysroot. Does it exist?")
            else:
                libs = os.pathsep.join(libs)
                extra_envs.append(('LIBRARY_PATH', ':=', libs))

            if not os.path.isdir(inc):
                logger.warning("No include/ in sysroot. Does it exist?")
            else:
                extra_envs.append(('CPATH', ':=', inc))

        utils.install_script('pywrapper.py.tmpl', context.cross_env_exe, locals())

        for exe in ('python', 'python3'):
            exe = os.path.join(context.cross_bin_path, exe)
            if not os.path.exists(exe):
                utils.symlink(context.python_exe, exe)

        # Install patches to environment
        utils.install_script('site.py.tmpl',
                os.path.join(context.lib_path, 'site.py'),
                locals())
        self.copy_and_patch_sysconfigdata(context)

        # cross-python is ready. We will use build-pip to install cross-pip
        # because 'python -m ensurepip' is likely to get confused and think
        # that there's nothing to do.
        if self.with_cross_pip:
            logger.info("Installing cross-pip")

            # Make sure we install the same version of pip and setuptools to
            logger.debug("Installing: %s", context.build_pip_reqs)
            subprocess.check_output([context.cross_env_exe, '-m', 'pip',