[BangPypers] missing dependency while installing virtualenvwrapper on ubuntu-12.04

kracethekingmaker kracethekingmaker at gmail.com
Fri Jul 20 11:34:44 CEST 2012

I had similar issue when I upgraded, Update virtualenvwrapper, and try 
to create new venv it works but older ones fail. This bug is reported in 
launchpad. I tweeted about this in beginning of april but I couldn't get 
hold of it now.
> vid<vid at svaksha.com>  writes:
>> An upgrade to ubuntu 12.04 gives this error:
>> $ sudo pip install virtualenvwrapper
>> Traceback (most recent call last):
>>    File "/usr/local/bin/pip", line 5, in<module>
>>      from pkg_resources import load_entry_point
>>    File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2711,
>> in<module>
>>      parse_requirements(__requires__), Environment()
>>    File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 584, in resolve
>>      raise DistributionNotFound(req)
>> pkg_resources.DistributionNotFound: pip==1.1
>> Is it a missing (or just not versioned) dependency or packaging error?
> Looks like the package metadata is getting messed up because of a non Ubuntu pip
> (/usr/local/bin) and an Ubuntu Python.
> I'd recommend that you either `apt-get install virtualenvwrapper` and
> use that to manage your venvs or `apt-get install python-virtualenv`,
> use that to create a virtualenv and install virtualenvwrapper inside
> that venv and use that.
> Using `sudo` to install something that touches system directories
> (thereby bypassing the native package management framework) is usually
> the first step to a broken system.
> [...]

"Talk is cheap, show me the code" -- Linus Torvalds

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