Sassy

# About

This module automatically compiles SASS / SCSS files on your Drupal website.

Further info
http://drupal.org/project/sassy

# Installation

Download Libraries, Prepro and Sassy, and place them in your modules folder:
http://drupal.org/project/libraries
http://drupal.org/project/prepro
http://drupal.org/project/sassy

Download PHPSass, and extract into your sites/all/libraries folder:
http://github.com/richthegeek/phpsass
 - from the link above or just download it directly from here: https://github.com/richthegeek/phpsass/archive/master.zip
IMPORTANT NOTE: if you download the zip you'll have to unzip and rename the folder phpsass-master to just phpsass then put it in sites/all/libraries

Enable the Sassy module (this will auto-enable Libraries and Prepro)

# Usage

Configure preprocessing settings at
- admin/config/media/prepro

Add .scss or .sass files to your theme's .info file.

Making Drupal Sassy - an overview of Sassy, Prepro, and PHPSass (PDF)
https://www.drupal.org/files/Making%20Drupal%20Sassy.pdf