Hello, bootstrapping GHC HEAD with HEAD is broken. The failure looks like:

libraries/binary/src/Data/Binary/Builder/Base.hs:67:0: error:
     missing binary operator before token "("

libraries/binary/src/Data/Binary/Builder/Base.hs:114:0: error:
     missing binary operator before token "("

libraries/binary/src/Data/Binary/Builder/Base.hs:123:0: error:
     missing binary operator before token "("
`gcc' failed in phase `C pre-processor'. (Exit code: 1)
gmake[1]: *** [utils/ghc-cabal/dist/build/tmp/ghc-cabal] Error 1
gmake: *** [all] Error 2

I'm setting highest prio on this (as I feel) so lower this if you like.