Python DevStack安装错误：目录'；opt/stack/nova'；不可安装

我正在尝试在Ubuntu14.04上安装Devstack，所有这些都在VirtualBox虚拟机上运行。当我运行./stack.sh时，脚本会运行一段时间，然后在终端中出现以下错误：

   DEPRECATION: --no-install, --no-download, --build, and --no-clean are deprecated.  
   See https://github.com/pypa/pip/issues/906.
   Directory '/opt/stack/nova' is not installable. File 'setup.py' not found.
   Storing debug log for failure in /home/name/.pip/pip.log

pip.log显示：

    /usr/local/bin/pip run on Thu Aug 14 16:53:09 2014
    DEPRECATION: --no-install, --no-download, --build, and --no-clean are deprecated.
    See https://github.com/pypa/pip/issues/906.
    Directory '/opt/stack/nova' is not installable. File 'setup.py' not found.
    Exception information:
    Traceback (most recent call last):
    File "/usr/local/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main
    status = self.run(options, args)
    File "/usr/local/lib/python2.7/dist-packages/pip/commands/install.py", line 260, 
    in run

    InstallRequirement.from_editable(name, default_vcs=options.default_vcs))
    File "/usr/local/lib/python2.7/dist-packages/pip/req.py", line 114, in from_editable
    name, url, extras_override = parse_editable(editable_req, default_vcs)
    File "/usr/local/lib/python2.7/dist-packages/pip/req.py", line 1693, in 
    parse_editable
    raise InstallationError("Directory %r is not installable. File 'setup.py' not 
    found." % url_no_extras)
    InstallationError: Directory '/opt/stack/nova' is not installable. File 'setup.py' 
    not found.

---

如有必要，我可以提供更多详细信息，如有任何帮助，将不胜感激。

请尝试以下命令。这些论文应该能让你工作

sudo rm -rf /opt/stack/nova

sudo apt-get purge python-paste

sudo apt-get install python-paste

sudo apt-get purge python-pastedeploy

sudo apt-get install python-pastedeploy

---

再次执行

unstack.sh

和

stack.sh
是否检查了
PYTHONPATH
？可能是
//lib/python2.7/站点包中缺少
。注意，您可能已经添加了那些应该只在安装后才真正存在的。我对这个问题添加了一些评论。