title: Cannot open include file: 'libxml/xmlversion.h': No such file or directory
body: <p>While trying to install "lxml-3.1.0", I got the following error.</p>
  
  <pre><code>C:\Users\affine\Desktop\lib\lxml-3.1.0\src\lxml\includes\etree_defs.h(9) : 
      fatal  error C1083: Cannot open include file: 'libxml/xmlversion.h':
      No such file or directory
      error: command '"C:\Program Files\Microsoft Visual Studio 10.0\VC\BIN\cl.exe"'
      failed with exit status 2
  </code></pre>
  
  <p>Could someone help me understand this and overcome this issue?</p>