I'll try to collect my thoughts and tease out what did/didn't work tomorrow,
in the mean time, here's a build I believe should work for everyone on mac and should have full docs,
shasum -a512 ghc-8.0.0.20160421-x86_64-apple-darwin.tar.xz
969eb2914b9c7c31bcdfb814aac34f0dcd9d6c8d7b9e7affe1605985e9de543d911dc6dae0fa05a32da12150d56488e56ad6fbf4d1f818ec84f7a4759d876c95 ghc-8.0.0.20160421-x86_64-apple-darwin.tar.xz
one niggling issue is that, at least based upon the output of otool -L, the builds point to /usr/local/lib/gcc/6/libgcc_s.1.dylib
(my userland GCC leaking through)
and I *believe* but could be wrong that its better to have it point to /usr/lib/libgcc_s.1.dylib or something?
otoh, the otool -L output of those respective things are VERY different
I will investigate that further, though its orthogonal to my doc building confusion that I still need to work out what happened with