The package won't compile when 'buildExamples' is enabled. First of all,
it depends on an ancient version of the 'executable-path' library. That
problem can be remedied by adding
patchPhase = ''
sed -i -e 's|executable-path == 0.0.\*|executable-path|' reactive-banana-wx.cabal
'';
..., but even then it won't build because the Cabal file doesn't declare
all dependencies properly. Both GHC 7.0.4 and 7.4.1 fail complaining
about the absence of Prelude.
svn path=/nixpkgs/trunk/; revision=34328
b89f433951