Does anyone know how to install SASS on Laravel 4?

Try laravel-sass !

As all of the other projects I found were either dead, horribly broken or simply don't offer any automatic scss compiling (without having to trigger it manually every time) I ended up writing a simple tool that:

• compiles all .scss in your scss folder automatically into same-named .css files into your css folder
• is written in pure PHP !
• uses the excellent scssphp compiler and puts automatism around it
• supports the latest SCSS syntax, currently SCSS 3.2.12
• is installed via Composer with one line of code
• let's you define the scss and the css folder, so you always have accurate, same-name css files of your scss

Installation tutorial on my blog: How to use SASS in Laravel.