> I so had a quick look and here are the buildrequires (each time with > other build requires for package) for > hwloc: >   libibverbs >     valgrind >       openmpi >         valgrind (and other ones, like libiverbs too) => circular > build dep > > So let me then just try to >  * rebuild openmpi (from f19, against f19+c7) >  * inject it in buildroot (_staging) >  * try to then rebuild valgrind, libibverbs, hwloc, etc

what you probably want is:
* rebuild openmpi (from *c7*, against f19+c7)

Jacco