title: virtualenv not using own packages
body: <p>I'm starting to use <strong>virtualenv</strong> and <strong>virtualenvwrapper</strong> on my projects.</p>
  
  <p>After activating the virtualenv with the <code>workon</code> command, i installed the following packages with <code>pip install -U &lt;package&gt;</code>:</p>
  
  <pre><code>$ lssitepackages 
  django               pip
  Django-1.3-py2.7.egg-info    pip-1.0.1-py2.7.egg-info
  easy-install.pth         setuptools-0.6c11-py2.7.egg
  fabric               setuptools.pth
  Fabric-1.0.1-py2.7.egg-info  south
  geopy                South-0.7.3-py2.7.egg-info
  geopy-0.94.1-py2.7.egg-info
  </code></pre>
  
  <p>The problem here is (running commands with the virtualenv activated):</p>
  
  <pre><code>$ whereis python
  python: /usr/bin/python2.6 /usr/bin/python /usr/bin/python2.7 /etc/python2.6 /etc/python /etc/python2.7 /usr/lib/python2.6 /usr/lib/python2.7 /usr/lib64/python2.6 /usr/lib64/python2.7 /usr/local/lib/python2.6 /usr/local/lib/python2.7 /usr/include/python2.6 /usr/include/python2.7 /usr/share/python /usr/share/man/man1/python.1.gz
  
  $ whereis django-admin
  django-admin: /usr/bin/django-admin /usr/local/bin/django-admin.py /usr/share/man/man1/django-admin.1.gz
  
  $ whereis fab
  fab: /usr/local/bin/fab
  </code></pre>
  
  <p>My <strong>virtualenv</strong> it's not using the local packages!</p>
  
  <p>How do I force the virtualenv use local Python and local version of packges instead my machine packages?</p>
  
  <hr>
  
  <p><strong>Update - Possible solution</strong></p>
  
  <p>I created a new virtualenv with <code>mkvirtualenv --no-site-packages &lt;name&gt;</code> and now I got these outputs:</p>
  
  <pre><code>$ which python
  /home/user/.virtualenvs/VIRTUALENVNAME/bin/python
  
  $ which django-admin
  /usr/bin/django-admin
  
  $ which django-admin.py 
  /home/user/.virtualenvs/VIRTUALENVNAME/bin/django-admin.py
  
  $ which fab
  /home/user/.virtualenvs/VIRTUALENVNAME/bin/fab
  </code></pre>
  
  <p>Sounds like it's working now... except for the "django-admin" command.</p>