[Fedora-packaging] ExclusiveArch and dependencies

I have a question regarding the use of ExclusiveArch. At https://fedoraproject.org/wiki/Architectures#ExcludeArch_.26_ExclusiveArch it says that only packages which are exclusively architecture-specific should use ExclusiveArch. Is it appropriate to extend this to packages which aren't architecture-specific themselves, but which depend on a package that is available only on some architectures? The reason why I'm asking is that some packages with Ada code which I maintain can't be built on architectures where Gnat, the Ada compiler, is unavailable, and apparently this annoys the people who work on secondary architectures. The proposed workaround is to add ExclusiveArch entries to the Ada packages, listing the architectures where the gcc-gnat package is available, and then update those entries when someone manages to bootstrap Gnat on a new architecture. I'd like to know if this use of ExclusiveArch is acceptable, or if I'll run the risk of being told that it's against the rules and must be removed. Björn Persson