virtualenv-p在创建新的虚拟环境时删除sys.prefix文件路径的最后一部分

当我尝试使用python的The Enthought Canopy发行版创建一个新的虚拟环境时,我一直遇到以下问题

localhost:workspace brendan$ virtualenv -p /Users/brendan/Library/Enthought/Canopy_64bit/User/bin/python test
Running virtualenv with interpreter /Users/brendan/Library/Enthought/Canopy_64bit/User/bin/python
Using base prefix '/Applications/Canopy.app/appdata/canopy-1.4.1.1975.macosx-x86_64/Canopy.app/Contents'
New python executable in test/bin/python
dyld: Library not loaded: @rpath/Python
  Referenced from: /Users/brendan/Dropbox/workspace/test/bin/python
  Reason: image not found
ERROR: The executable test/bin/python is not functioning
ERROR: It thinks sys.prefix is u'/Users/brendan/Dropbox/workspace' (should be u'/Users/brendan/Dropbox/workspace/test')
ERROR: virtualenv is not compatible with this system or executable
localhost:workspace brendan$ 

我不知道为什么它总是掉最后一部分 sys.prefix 或者我该如何解决这个问题。

这是 related to a previous question I posted 其中这是建议的解决方案。

非常感谢您的帮助

谢谢