docs: def install_deps(self, virtualenv, skip_cached=True, always_exit=False, exit_if_failed=True,
                       stdin=sys.stdin, stdout=sys.stdout, stderr=sys.stderr):
          """
          :type virtualenv: VirtualEnv
          """
          config = self.registered_venvs[virtualenv.venv_name]
          configed_deps = config['deps']
          for dep in configed_deps:
              if dep.startswith(FILE_PREFIX):
                  dep = self._full_relative_path(dep.replace(FILE_PREFIX, ''))
                  virtualenv.install_requirements_file(dep, skip_cached=skip_cached,
                                                       always_exit=always_exit,
                                                       exit_if_failed=exit_if_failed, stdin=stdin,
                                                       stdout=stdout, stderr=stderr)
              else:
                  virtualenv.install_deps([dep], skip_cached=skip_cached, always_exit=always_exit,
                                          exit_if_failed=exit_if_failed, stdin=stdin,
                                          stdout=stdout, stderr=stderr)