nixpkgs/doc/contributing.xml

<chapter xmlns="http://docbook.org/ns/docbook"
         xmlns:xlink="http://www.w3.org/1999/xlink"
         xml:id="chap-contributing">

<title>Contributing</title>

<para>If you make modifications to the manual, it's important to build the manual before contributing:</para>

<orderedlist>

  <listitem><para><command>$ git clone git://github.com/NixOS/nixpkgs.git</command></para></listitem>

  <listitem><para><command>$ nix-build -A manual nixpkgs/pkgs/top-level/release.nix</command></para></listitem>
  
  <listitem><para>Inside the built derivation you shall see <literal>manual/index.html</literal> file.</para></listitem>

</orderedlist>

</chapter>