<part   xmlns="http://docbook.org/ns/docbook"
        xmlns:xlink="http://www.w3.org/1999/xlink"
        xmlns:xi="http://www.w3.org/2001/XInclude"
        version="5.0"
        xml:id="ch-development">
 <title>Development</title>
 <partintro>
  <para>
   This chapter describes how you can modify and extend NixOS.
  </para>
 </partintro>
 <xi:include href="sources.xml" />
 <xi:include href="writing-modules.xml" />
 <xi:include href="building-parts.xml" />
 <xi:include href="writing-documentation.xml" />
 <xi:include href="building-nixos.xml" />
 <xi:include href="nixos-tests.xml" />
 <xi:include href="testing-installer.xml" />
 <xi:include href="releases.xml" />
</part>
