[Python-modules-team] Bug#679337: python-virtualenv: Embedded pip in virtualenv crashes with Python >= 2.7.3, 3.2.3

[Carl Chenet]

Package: python-virtualenv
Version: 1.7.1.2-1
Severity: important

Dear Maintainer,

Here is the step to reproduce the bug:

chaica at sid2:/tmp$ virtualenv mytest
New python executable in mytest/bin/python
Installing distribute.............................................................................................................................................................................................done.
Installing pip...............done.
chaica at sid2:/tmp$ cd mytest/
chaica at sid2:/tmp/mytest$ source bin/activate
(mytest)chaica at sid2:/tmp/mytest$ pip install tornado
Traceback (most recent call last):
  File "/tmp/mytest/bin/pip", line 9, in <module>
    load_entry_point('pip==1.1', 'console_scripts', 'pip')()
  File "/tmp/mytest/local/lib/python2.7/site-packages/distribute-0.6.24-py2.7.egg/pkg_resources.py", line 337, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/tmp/mytest/local/lib/python2.7/site-packages/distribute-0.6.24-py2.7.egg/pkg_resources.py", line 2279, in load_entry_point
    return ep.load()
  File "/tmp/mytest/local/lib/python2.7/site-packages/distribute-0.6.24-py2.7.egg/pkg_resources.py", line 1989, in load
    entry = __import__(self.module_name, globals(),globals(), ['__name__'])
  File "/tmp/mytest/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/__init__.py", line 11, in <module>
    from pip.basecommand import command_dict, load_command, load_all_commands, command_names
  File "/tmp/mytest/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/basecommand.py", line 12, in <module>
    from pip.download import urlopen
  File "/tmp/mytest/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/download.py", line 15, in <module>
    from pip.vcs import vcs
  File "/tmp/mytest/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/vcs/__init__.py", line 81, in <module>
    vcs = VcsSupport()
  File "/tmp/mytest/local/lib/python2.7/site-packages/pip-1.1-py2.7.egg/pip/vcs/__init__.py", line 22, in __init__
    urlparse.uses_fragment.extend(self.schemes)
AttributeError: 'module' object has no attribute 'uses_fragment'

Explanation:

The embedded pip in virtualenv crashes with Python >= 2.7.3, 3.2.3. This situation has been solved in the python-pip Debian package (See #677801 and the upstream bug [1]) but the python-virtualenv Debian package has an unpatched pip 1.1 source tarball in /usr/share/python-virtualenv which is used by virtualenv inside a virtual environment.

[1]: https://github.com/pypa/pip/issues/552

I'm not sure yet what the good solution is. Maybe to patch the files in this pip 1.1 source tarball.

Regards,
Carl Chenet

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages python-virtualenv depends on:
ii  python                2.7.3~rc2-1
ii  python-pkg-resources  0.6.24-1
ii  python-setuptools     0.6.24-1
ii  python2.6             2.6.7-4
ii  python2.7             2.7.3-1

Versions of packages python-virtualenv recommends:
ii  python-pip  1.1-3

python-virtualenv suggests no packages.

-- no debconf information