https://bugzilla.redhat.com/show_bug.cgi?id=982204
--- Comment #10 from Jens Petersen petersen@redhat.com --- Actually Elm > 0.10.0.2 requires binary >= 0.6.4.0, ie ghc-7.8!
So targeting 0.10.0.2 currently seems best at least until ghc-7.8 is in rawhide.
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