txt

pip install virtualenvwrapper
Collecting virtualenvwrapper
  Downloading https://files.pythonhosted.org/packages/2b/8c/3192e10913ad945c0f0fcb17e9b2679434a28ad58ee31ce0104cba3b1154/virtualenvwrapper-4.8.2-py2.py3-none-any.whl
Requirement already satisfied: virtualenv in /nix/store/836im85gwpjj7bj2clxngwhvppf4x7rq-python-2.7.14-env/lib/python2.7/site-packages (from virtualenvwrapper)
Collecting virtualenv-clone (from virtualenvwrapper)
  Downloading https://files.pythonhosted.org/packages/6d/c2/dccb5ccf599e0c5d1eea6acbd058af7a71384f9740179db67a9182a24798/virtualenv_clone-0.3.0-py2.py3-none-any.whl
Collecting stevedore (from virtualenvwrapper)
  Downloading https://files.pythonhosted.org/packages/17/6b/3b7d6d08b2ab3e5ef09e01c9f7b3b590ee135f289bb94553419e40922c25/stevedore-1.28.0-py2.py3-none-any.whl
Requirement already satisfied: six>=1.10.0 in /nix/store/836im85gwpjj7bj2clxngwhvppf4x7rq-python-2.7.14-env/lib/python2.7/site-packages (from stevedore->virtualenvwrapper)
Exception:
Traceback (most recent call last):
  File "/nix/store/836im85gwpjj7bj2clxngwhvppf4x7rq-python-2.7.14-env/lib/python2.7/site-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/nix/store/836im85gwpjj7bj2clxngwhvppf4x7rq-python-2.7.14-env/lib/python2.7/site-packages/pip/commands/install.py", line 324, in run
    requirement_set.prepare_files(finder)
  File "/nix/store/836im85gwpjj7bj2clxngwhvppf4x7rq-python-2.7.14-env/lib/python2.7/site-packages/pip/req/req_set.py", line 380, in prepare_files
    ignore_dependencies=self.ignore_dependencies))
  File "/nix/store/836im85gwpjj7bj2clxngwhvppf4x7rq-python-2.7.14-env/lib/python2.7/site-packages/pip/req/req_set.py", line 666, in _prepare_file
    check_dist_requires_python(dist)
  File "/nix/store/836im85gwpjj7bj2clxngwhvppf4x7rq-python-2.7.14-env/lib/python2.7/site-packages/pip/utils/packaging.py", line 48, in check_dist_requires_python
    feed_parser.feed(metadata)
  File "/nix/store/836im85gwpjj7bj2clxngwhvppf4x7rq-python-2.7.14-env/lib/python2.7/email/feedparser.py", line 177, in feed
    self._input.push(data)
  File "/nix/store/836im85gwpjj7bj2clxngwhvppf4x7rq-python-2.7.14-env/lib/python2.7/email/feedparser.py", line 99, in push
    parts = data.splitlines(True)
AttributeError: 'NoneType' object has no attribute 'splitlines'