> Honestly this is annoying misbehavior. How we can tell Koji to avoid > certain builders for certain noarch packages? Wouldn't be possible to > build noarch packages just on primary arch builders for example?
You can. (make it arch specific)
It doesn't make any sense to me - you want noarch package, but only on specific architectures ?? Even if you solve it your way, what would it be good for? (I'm kinda curious)