toucanbuzz
No rule is inviolate
...The restrictions people are asking for Dark Sun do seem to be much more strict than in these cases. I don't actually know the right way to do this, as I think using space for "These spells are banned!" kind of silly, but I would enjoy a section explaining alternative rules for spells that create food/water/nourishment, and for how clerics/wizards work. A flat ban actually seems like an uninteresting way of circumventing this problem.
The original 2E Boxed Set has a banned/modified section in "New Spells," which describes any spell that operated differently or not at all. It'd be a must (e.g. Reincarnation, find familiar, anything calling fey or woodland beings). The writers of Dark Sun took a bold move by risking taking away a player's favorite spell, but it paid off as one of their most successful lines ever, even if TSR was a disaster.
So, this would need to be a chapter.