CKAN 安装：粘贴错误

在 OSX 10.9 上本地安装 CKAN，基于http://docs.ckan.org/en/latest/maintaining/installing/install-from-source.html http://docs.ckan.org/en/latest/maintaining/installing/install-from-source.html.

我已经创建并激活了 python virtualenv，现在需要创建一个 CKAN 配置文件：

$ paster make-config ckan /etc/ckan/default/development.ini

输出如下（最后一行出现ImportError）：

Distribution already installed:
      ckan 2.2 from ~/ckan/lib/default/src/ckan
    Traceback (most recent call last):
      File "/usr/lib/ckan/default/bin/paster", line 9, in <module>
        load_entry_point('PasteScript==1.7.5', 'console_scripts', 'paster')()
      File "/usr/lib/ckan/default/lib/python2.7/site-packages/paste/script/command.py", line 104, in run
        invoke(command, command_name, options, args[1:])
      File "/usr/lib/ckan/default/lib/python2.7/site-packages/paste/script/command.py", line 143, in invoke
        exit_code = runner.run(args)
      File "/usr/lib/ckan/default/lib/python2.7/site-packages/paste/script/appinstall.py", line 68, in run
        return super(AbstractInstallCommand, self).run(new_args)
      File "/usr/lib/ckan/default/lib/python2.7/site-packages/paste/script/command.py", line 238, in run
        result = self.command()
      File "/usr/lib/ckan/default/lib/python2.7/site-packages/paste/script/appinstall.py", line 295, in command
        self.distro, self.options.ep_group, self.options.ep_name)
      File "/usr/lib/ckan/default/lib/python2.7/site-packages/paste/script/appinstall.py", line 234, in get_installer
        'paste.app_install', ep_name)
      File "/usr/lib/ckan/default/lib/python2.7/site-packages/pkg_resources.py", line 2302, in load_entry_point
        return ep.load()
      File "/usr/lib/ckan/default/lib/python2.7/site-packages/pkg_resources.py", line 2029, in load
        entry = __import__(self.module_name, globals(),globals(), ['__name__'])
      File "~/ckan/lib/default/src/ckan/ckan/config/install.py", line 3, in <module>
        from pylons.util import PylonsInstaller
    ImportError: No module named pylons.util

我不知道如何继续，有什么想法吗？

ImportError: No module named pylons.util看起来Python找不到Pylons包，CKAN依赖的Python包之一。我想到了两种可能性：

1. 在运行 Paster 命令之前，您是否激活了 CKAN virtualenv？~/ckan/default/bin/activate.

2. 您是否已将 CKAN 依赖的 Python 包安装到您的 virtualenv 中？激活 virtualenv 后运行pip install -r ~/ckan/default/src/ckan/requirements.txt

如果您激活 CKAN 虚拟环境然后运行pip freeze | grep pylons，这应该告诉您 pylons 是否安装在 virtualenv 中。

The Distribution already installed:终端输出顶部的内容很奇怪。