ghc-network has ancient config.guess and config.sub which doesn't support ppc64le.

Update with the ones included in rpm

ghc-network.spec

@@ -7,7 +7,7 @@
 Name:           ghc-%{pkg_name}
 # part of haskell-platform
 Version:        2.4.2.2
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Low-level networking interface
 
 License:        BSD
@@ -46,7 +46,8 @@ This package provides the Haskell %{pkg_name} library development files.
 
 %prep
 %setup -q -n %{pkg_name}-%{version}
-
+# Use rpm's config.* to support new archs like ppc64le
+cp -f /usr/lib/rpm/config.{guess,sub} .
 
 %build
 %ghc_lib_build
@@ -79,6 +80,9 @@ This package provides the Haskell %{pkg_name} library development files.
 
 
 %changelog
+* Fri Jun 06 2014 Karsten Hopp <karsten@redhat.com> 2.4.2.2-2
+- Use rpm's config.* to support new archs like ppc64le
+
 * Wed Jun 04 2014 Jens Petersen <petersen@redhat.com> - 2.4.2.2-1
 - update to 2.4.2.2 with cabalrpm-0.8.11