This is explicitly prohibited by Packaging Guidelines: https://fedoraproject.org/wiki/Packaging:Guidelines#BuildRequires_and_.25.7B_isa.7D
Thanks - all the Haskell packages have been fixed. It would be nice if fedora-review caught these too...
I opened bug 1546002 anyway
(In reply to Jens Petersen from comment #1) > Thanks - all the Haskell packages have been fixed. > > It would be nice if fedora-review caught these too... Unfortunately, fedora-review is dead... =(