<chapter xmlns="http://docbook.org/ns/docbook"
         xmlns:xlink="http://www.w3.org/1999/xlink"
         xmlns:xi="http://www.w3.org/2001/XInclude"
         xml:id="chap-functions">
 <title>Functions reference</title>
 <para>
  The nixpkgs repository has several utility functions to manipulate Nix expressions.
 </para>
 <xi:include href="functions/library.xml" />
 <xi:include href="functions/generators.xml" />
 <xi:include href="functions/debug.xml" />
 <xi:include href="functions/prefer-remote-fetch.xml" />
 <xi:include href="functions/nix-gitignore.xml" />
</chapter>
