https://bugzilla.redhat.com/show_bug.cgi?id=1200404
--- Comment #5 from Jens Petersen petersen@redhat.com --- Okay so of course this won't build yet in epel7 koji since we have not bootstrapped ghc there yet for ppc64le. The simplest thing would be to tag the F21 ghc package into the EPEL7 buildroot.
I can do a bootstrap ghc-rpm-macros build to allow it to build. hscolour will also need to be built.
(See also bug 1193178, but %ghc_arches is actually mostly deprecated now and both the new arches do not have ghci so %ghc_arches_with_ghci, so actually this bug has little affect any more.)