title: PIP: Installing only the dependencies
body: <p>I have a script that creates a <code>virtualenv</code>, installs <code>distribute</code> and <code>pip</code> in it and then optionally clones a <code>git</code> repo.</p>
  
  <p>Now I have the project I will be working on, installed. But its dependencies are not installed. How can I make <code>pip</code> install all the dependencies as if I have issued a <code>pip install MyApp</code>?</p>
  
  <p><strong>EDIT</strong>: Appareantly my question is a duplicate of <a href="https://stackoverflow.com/questions/2087148/can-i-use-pip-instead-of-easy-install-for-python-setup-py-install-dependenc">this one</a>.</p>
  
  <p>Not exactly sure but <code>pip install -e .</code> seems to do what I want without too many extra stuff lying around. I'd prefer if my code wasn't linked from <code>site-packages</code> though.</p>