WiKit is very easy to install. It is a single-file cross-platform script package called a StarKit (see http://www.equi4.com/starkit/index.html). You also need a single-file binary TclKit (see http://www.equi4.com/tclkit/index.html) which is available for more than two dozen hardware and operating system combinations. WiKit contains its own database, interactive (local mode) GUI, and page rendering, so all you really need is CGI.
There's an active Wiki site based on it for the Tcl/Tk scripting language, at: