Note: You may want to use https://github.com/bep/golibsass instead of this.
This is currently a, hopefully, simple to use LibSass Go API. It uses the C bindings in https://github.com/wellington/go-libsass/libs to do the heavy lifting.
The primary motivation for this project is to add SCSS support to Hugo. It is has some generic tocss package names hoping that there will be a solid native Go implementation that can replace LibSass in the near future.