But what does "on the fly" actually mean? I just installed the minimal version of Fedora 18 linked to in the page https://wiki.amahi.org/index.php/Fedora_18NOTE: it's best to start installing "on the fly" with the Fedora 18 install, by adding f18.amahi.org as a repo at the time that Fedora allows you to add new repos. We are past the phase of installing packages by hand and want to start testing as users would install!
But not once did it give me the option to add additional repos. So a bit more information would be helpfull.