>>53
There is git, however I wouldn't suggest using that for packaging as it git doesn't contain the maps and texture data. Also it's a pain to set up the various repos properly;

The release ISO contains that sourcecode aswell, both of the engine and the game code. They should package that. All they have to do is copy /XonoticChaosEsque/ to /usr/share/games/

Then make a symlink /usr/bin to the startup script (or wherever they put the executables.)

The engine source is in darkplaces-blablabla.zip, the crypto library is in another .zip and the gamecode quakeC is in the zzzzzz99999 pk3 (though they won't have to touch that at all).

Debian refused to package anything I make, however, because I'm opposed to women's rights, in-favor of man+girl(child), and am a "troll".

Perhaps the playdeb people are the same people?