saltstack/salt — pull request #11013 by rallytime (2014-03-06 21:25:38+00:00)
Title: Only allow certain linux systems to run keyboard module

Previously, all non-windows systems were allowed to run this module, but it doesn't work with OS X.

I confirmed with @techhat that he wrote this module to only work for Arch, Redhat, Debian, and Gentoo families.