title: Installing SciPy and NumPy using pip
body: <p>I'm trying to create required libraries in a package I'm distributing. It requires both the <a href="http://en.wikipedia.org/wiki/SciPy">SciPy</a> and <a href="http://en.wikipedia.org/wiki/NumPy">NumPy</a> libraries.
  While developing, I installed both using</p>
  
  <pre><code>apt-get install scipy
  </code></pre>
  
  <p>which installed SciPy 0.9.0 and NumPy 1.5.1, and it worked fine.</p>
  
  <p>I would like to do the same using <code>pip install</code> - in order to be able to specify dependencies in a setup.py of my own package.</p>
  
  <p>The problem is, when I try:</p>
  
  <pre><code>pip install 'numpy==1.5.1'
  </code></pre>
  
  <p>it works fine.</p>
  
  <p>But then</p>
  
  <pre><code>pip install 'scipy==0.9.0'
  </code></pre>
  
  <p>fails miserably, with</p>
  
  <pre><code>raise self.notfounderror(self.notfounderror.__doc__)
  
  numpy.distutils.system_info.BlasNotFoundError:
  
  Blas (http://www.netlib.org/blas/) libraries not found.
  
  Directories to search for the libraries can be specified in the
  
  numpy/distutils/site.cfg file (section [blas]) or by setting
  
  the BLAS environment variable.
  </code></pre>
  
  <p>How do I get it to work?</p>