All new features require work (and in most cases that means contributions) :) If you are talking about the linux installers, you find the source in tango/trunk/install/*
I should mention though that Tangobos isn't really a Tango project such that I'm not really sure if putting that dependency/functionality in the Tango installers is the correct thing to do. It should be possible to augment them to install whichever libs exists in the package though.