title: Install lxml into virtualenv
body: <p>I am attempting to install the latest lxml module in a virtualenv with Python3.4 on Windows 7. As a long time Linux user, this process should be simple, but, of course, it's not. I'm trying to install the latest lxml, and there is currently no package that works with Python3.4+ Consequently, I acquired libxml2 and libxslt, but I cannot seem to get anything to recognize them. Can anyone point me in the right direction of linking everything together.</p>
  
  <p>I've tired pretty much everything from <a href="http://lxml.de/build.html" rel="nofollow">http://lxml.de/build.html</a> and all the variants I can think of. Any help would be much appreciated.</p>
  
  <p>Error logs below:</p>
  
  <pre><code>Building lxml version 3.4.1.
  Building with Cython 0.21.1.
  ERROR: b"'xslt-config' is not recognized as an internal or external command,\r\noperable program or batch file.\r\n"
  ** make sure the development packages of libxml2 and libxslt are installed **
  
  Using build configuration of libxslt
  missing cimport in module 'lxml.includes': src\lxml\lxml.etree.pyx
  missing cimport in module 'lxml.includes.tree': src\lxml\lxml.etree.pyx
  missing cimport in module 'lxml.python': src\lxml\lxml.etree.pyx
  missing cimport in module 'lxml': src\lxml\lxml.etree.pyx
  missing cimport in module 'lxml.includes': src\lxml\lxml.objectify.pyx
  missing cimport in module 'lxml.includes.etreepublic': src\lxml\lxml.objectify.pyx
  missing cimport in module 'lxml.includes.tree': src\lxml\lxml.objectify.pyx
  missing cimport in module 'lxml': src\lxml\lxml.objectify.pyx
  C:\Python34\Lib\distutils\dist.py:260: UserWarning: Unknown distribution option: 'bugtrack_url'
    warnings.warn(msg)
  running build
  running build_py
  copying src\lxml\includes\lxml-version.h -&gt; build\lib.win32-3.4\lxml\includes
  running build_ext
  building 'lxml.etree' extension
  C:\minGW\bin\gcc.exe -mdll -O -Wall -IC:\Users\username\Desktop\angelScripts\draft\lxml-master\src\lxml\includes -IC:\Pyth
  on34\include -IC:\Python34\include -c src\lxml\lxml.etree.c -o build\temp.win32-3.4\Release\src\lxml\lxml.etree.o -w
  In file included from src\lxml\lxml.etree.c:239:0:
  C:\Users\username\Desktop\angelScripts\draft\lxml-master\src\lxml\includes/etree_defs.h:14:31: fatal error: libxml/xmlvers
  ion.h: No such file or directory
   #include "libxml/xmlversion.h"
                                 ^
  compilation terminated.
  error: command 'C:\\minGW\\bin\\gcc.exe' failed with exit status 1
  </code></pre>