mojotech/sass2stylus — pull request #4 by corysimmons (2014-03-08 19:54:22+00:00)
Title: Cs/fix converter

This will break for Sass before 3.3.0.alpha.353 (released early Oct. 2013).

Maybe you'd like to add an option in to support older versions of Sass? Or just tell people to update their Sass when they submit an issue.