title: pip install libxml2 failed
body: <p>I'm trying to install <code>libxml2</code> since I came to know this is dependency for <code>lxml</code>. Facing issues like:</p>
  
  <pre><code>Could not find dependencies
  </code></pre>
  
  <p>Any idea how to install <code>libxml2</code>?</p>
  
  <p>My python version is 3.5.2.</p>