title: backports/lzma/_lzmamodule.c:115:18: fatal error: lzma.h: No such file or directory
body: <p>I'm trying to install docker-registry. I got stuck after this:</p>
  
  <pre><code>$ apt-get install python-pip python-dev
  $ pip install -r requirements.txt
  [...]
  backports/lzma/_lzmamodule.c:115:18: fatal error: lzma.h: No such file or directory
  </code></pre>
  
  <p>The docker-registry I downloaded is v0.6.7</p>