req_install.py 文件源码

def install_editable(self, install_options,
                         global_options=(), prefix=None):
        logger.info('Running setup.py develop for %s', self.name)

        if self.isolated:
            global_options = list(global_options) + ["--no-user-cfg"]

        if prefix:
            prefix_param = ['--prefix={0}'.format(prefix)]
            install_options = list(install_options) + prefix_param

        with indent_log():
            # FIXME: should we do --install-headers here too?
            call_subprocess(
                [
                    sys.executable,
                    '-c',
                    SETUPTOOLS_SHIM % self.setup_py
                ] +
                list(global_options) +
                ['develop', '--no-deps'] +
                list(install_options),

                cwd=self.setup_py_dir,
                show_stdout=False)

        self.install_succeeded = True