Steam Controller doesn't work for Mac gamers

The days of the Mac being a barren wasteland for games are, if not completely consigned to the history books, at least heading there. Steam, arguably the closest thing PC gaming has to a default supplier, has had an OS X client since 2010, and there's no shortage of games compatible with Apple hardware.
One thing that isn't compatible though is the just-launched Steam Controller. Valve's dedicated oddball joypad -- first announced what seems an eternity ago, in the