在没有自制软件的Python的情况下使用virtualenv和virtualenvwrapper

Question

我使用Homebrew来管理大多数软件安装，但是我发现使用Python（尤其是virtualenv（和virtualenvwrapper））以单独的方式管理软件包非常复杂。 问题是我发现virtualenv将python符号链接到通过Homebrew安装的当前版本的Python，如下所示：

~/.pip/virtualenvs/httpie
├── include
│   └── python2.7 -> /usr/local/Cellar/python/2.7.7_2/Frameworks/Python.framework/Versions/2.7/include/python2.7
└── lib
    └── python2.7
        ├── UserDict.py -> /usr/local/Cellar/python/2.7.7_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/UserDict.py
        ├── UserDict.pyc
        ├── _abcoll.py -> /usr/local/Cellar/python/2.7.7_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/_abcoll.py
        ├── _abcoll.pyc
        ├── _weakrefset.py -> /usr/local/Cellar/python/2.7.7_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/_weakrefset.py
        ├── _weakrefset.pyc
        ├── abc.py -> /usr/local/Cellar/python/2.7.7_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/abc.py
        ├── abc.pyc
        ├── codecs.py -> /usr/local/Cellar/python/2.7.7_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/codecs.py
        ├── codecs.pyc
[...]

每当通过自制程序对Python进行更新时，这会引起各种链接问题：

$ http --head http://flic.kr/p/dQm85A
dyld: Library not loaded: @executable_path/../.Python
  Referenced from: /Users/3dweb/.pip/virtualenvs/httpie/bin/python2.7
  Reason: image not found
Trace/BPT trap: 5

每当创建新的virtualenv时，如何将virtualenv设置为始终（自动）指向系统Python？

Answer 1

通过自制软件以外的pip将virtualenv安装到系统Python中。 直接调用virtualenv。