$ system_profiler SPSoftwareDataType | grep "System Version"
      System Version: Mac OS X 10.6.7 (10J869)
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.0.2
$ cabal --version
cabal-install version 0.10.2
using version 1.10.1.0 of the Cabal library
$ cabal install hipmunkplayground
...
Updating documentation index /Users/andrew/Library/Haskell/doc/index.html
cabal: Error: some packages failed to install:
GLFW-0.4.2 failed during the building phase. The exception was:
ExitFailure 1
HipmunkPlayground-5.2.0.3 depends on GLFW-0.4.2 which failed to install.

Cheers,

Andrew Pennebaker
www.yellosoft.us