gistfile1.txt

failbowl:temp $ rm -rf env && pip install -E env dingus && . env/bin/activate && pip update pip 
Creating new virtualenv environment in env
  New python executable in env/bin/python
  Installing setuptools...done.....
Downloading/unpacking dingus
  Downloading dingus-0.2.tar.gz
  Running setup.py egg_info for package dingus
Installing collected packages: dingus
  Running setup.py install for dingus
    warning: build_py: byte-compiling is disabled, skipping.
    warning: install_lib: byte-compiling is disabled, skipping.
Successfully installed dingus
Cleaning up...
Traceback (most recent call last):
  File "/Users/grb/temp/env/bin/pip", line 5, in <module>
    pkg_resources.run_script('pip==0.7.1', 'pip')
  File "/Users/grb/temp/env/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 489, in run_script
  File "/Users/grb/temp/env/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg/pkg_resources.py", line 1214, in run_script
  File "/Users/grb/temp/env/lib/python2.6/site-packages/pip-0.7.1-py2.6.egg/EGG-INFO/scripts/pip", line 2, in <module>
    # EASY-INSTALL-SCRIPT: 'pip==0.7.1','pip'
  File "/Users/grb/temp/env/lib/python2.6/site-packages/pip-0.7.1-py2.6.egg/pip/__init__.py", line 234, in <module>
  File "/Users/grb/temp/env/lib/python2.6/site-packages/pip-0.7.1-py2.6.egg/pip/vcs/__init__.py", line 231, in import_vcs_support
OSError: [Errno 20] Not a directory: '/Users/grb/temp/env/lib/python2.6/site-packages/pip-0.7.1-py2.6.egg/pip/vcs'