GHCi runtime linker: fatal error: I found a duplicate definition for symbol
gf_mulx
whilst processing object file
/nix/store/3lzzqvxrzmr5bgnvyjc0b6p9gq2jdd2b-haskell-cryptonite-0.4/lib/ghc-7.6.3/cryptonite-0.4/HScryptonite-0.4.o
This could be caused by:
* Loading two different object files which export the same symbol
* Specifying the same object file twice on the GHCi command line
* An incorrect `package.conf' entry, causing some object to be
loaded twice.
GHCi cannot safely continue in this situation. Exiting now. Sorry.
Citing from http://hydra.cryp.to/build/946016/nixlog/1/raw: