Build_error_on_Mac_OSX_10.6.mdwn

While following the instructions given at the OSX build page , I get this error:

$ make
ghc -O2 -Wall -ignore-package monads-fd -fspec-constr-count=5 --make git-annex

Utility/JSONStream.hs:14:8:
    Could not find module `Text.JSON':
      Use -v to see a list of the files searched for.
make: *** [git-annex] Error 1

> Updated the instructions. [[done]] --[[Joey]]