How do you make git diff use gitx --diff on OS X

Question

Gitx has a great diff viewer, how do I make git automatically pipe git diff whatever into gitx?

I\'ve tried to set git config diff.external to a shell scrip

Answer 1

I asked a similar question a while back. That answer may help you. There are a couple of questions in there, but one has to do with opening a diff view in something other than FileMerge.