Hi Vít Ondruch:
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?
Will ExclusiveArch: %{nodejs_arches} noarch help?
https://fedoraproject.org/wiki/Packaging:Node.js#ExclusiveArch
Jonny