gruntjs/grunt-contrib-sass — pull request #3 by chicu123 (2012-10-08 17:07:10+00:00)
Title: Make the sass task run on 'darwin' platforms, too.

On Mac the platform is "darwin". According to the nodejs documentation comparing to "win32" is good enough for all windows platforms.

http://nodejs.org/api/process.html#process_process_platform