Nothing other than build errors often being architecture specific. My hope
is that 7.6.2 fixed these errors either way.
Am 30.01.2013 11:26 schrieb "Peter Simons" <notifications@github.com>:

> In pkgs/development/compilers/ghc/7.6.2.nix:
>
> > +stdenv.mkDerivation rec {
> > +  version = "7.6.2";
> > +
> > +  name = "ghc-${version}";
> > +
> > +  src = fetchurl {
> > +    url = "http://haskell.org/ghc/dist/${version}/${name}-src.tar.bz2";
> > +    sha256 = "d5f45184abeacf7e9c6b4f63c7101a5c1d7b4fe9007901159e2287ecf38de533";
> > +  };
> > +
> > +  buildInputs = [ ghc perl gmp ncurses ];
> > +
> > +  # The comments below applied to GHC 7.6.1, left for if somebody experiences
> > +  # similar problems. If so, I argue we should selectively disable parallel
> > +  # building JUST for that platform. ~aristidb
> > +  #
>
> In my experience, parallel build errors occur because the makefile
> underspecifies (or mis-states) the dependencies. If that is the case, then
> those issues will usually arise regardless of whether make is being run
> on Linux, Darwin, or any other system. I also don't see any system-specific
> stuff in the error messages shown below. So I wonder ... what makes you
> believe that race conditionts in the build system might dependent on the
> system platform?
>
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>