Hi.
According provided github repository instructions, this instruction will be generating a new component for mediawiki. Even, it cab be generated using debian specific format, so the main question is, are using a mediawiki installed from debian durectly or installed from sources?
I've worked with mediawiki and Debian from long time ago, you can see my profile for to know my linux experience
I can help you but I need more information.
P.D we speaks spanish