Building on OSX not working

I'm trying to install this on osx following your instructions:

1) `brew install gtk`
2) cloned the repo and cded into it
3) `stack build --stack-yaml=osx.yaml --install-ghc`

The last step resulted in the follow long error message:

https://gist.github.com/supriyo/b9510148e873334c38dcceb3cea65fc5

My current version of stack is `0.1.10.0 x86_64` running on OS X El Capitan `10.11.3`.

Thanks for the help and let me know if you need anymore info.