Chunk NixOS manual

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nixos/doc/manual/development/testing-installer.xml

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+<chapter 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-testing-installer">
+
+<title>Testing the Installer</title>
+
+<para>Building, burning, and booting from an installation CD is rather
+tedious, so here is a quick way to see if the installer works
+properly:
+
+<screen>
+$ nix-build -A config.system.build.nixos-install
+$ mount -t tmpfs none /mnt
+$ ./result/bin/nixos-install</screen>
+
+To start a login shell in the new NixOS installation in
+<filename>/mnt</filename>:
+
+<screen>
+$ ./result/bin/nixos-install --chroot
+</screen>
+
+</para>
+
+</chapter>