Dear Jens,
Am Montag, den 03.02.2014, 19:49 +0900 schrieb Jens Petersen:
Hi, I did a test build [1] of the current ghc-7.8 branch for Fedora 21 devel, which I think should also install to Fedora 20.
I’m surprised that it worked for you. Did not you not hit http://ghc.haskell.org/trac/ghc/ticket/8725?
Greetings, Joachim