Hi Joachim,

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?

Does that also affect 7.8? I see the report is for a 7.9 snapshot.