Error installing stylish-haskell on Mac OS X on Haskell Platform 2013.2.0.0

Question

I get the same error relatively consistently when trying to install the stylish-haskell package off of hackage. The install went swimmingly until it got to installing condui

Answer 1

I'm not an expert here, but I think this is caused by Mavericks replacing the standard gcc with a version of clang wrapped with a gcc-semi-compatible wrapper. It make GHC choke from time to time. You can fix it by editing /usr/local/lib/ghc-7.6.3/settings so that the "C compiler command" entry points to a valid gcc.

For instance, I installed gcc 4.8 from Homebrew and then changed the settings line to

 ("C compiler command", "/usr/local/bin/gcc-4.9")