compass.rb

# This configuration file works with both the Compass command line tool and within Rails.
# Require any additional compass plugins here.
require 'ninesixty'
project_type = :rails
project_path = RAILS_ROOT if defined?(RAILS_ROOT)
# Set this to the root of your project when deployed:
http_path = "/"
css_dir = "tmp/stylesheets"
sass_dir = "app/stylesheets"
environment = Compass::AppIntegration::Rails.env
# To enable relative paths to assets via compass helper functions. Uncomment:
# relative_assets = true

Gemfile

gem 'compass', '0.10.2'
gem 'compass-960-plugin', :require => 'ninesixty'
gem 'haml', '3.0.10'

stylesheets.rb

# Adapted from
# http://github.com/chriseppstein/compass/issues/issue/130
# and other posts.

# Create the dir
require 'fileutils'
FileUtils.mkdir_p(Rails.root.join("tmp", "stylesheets"))

Sass::Plugin.on_updating_stylesheet do |template, css|
  puts "Compiling #{template} to #{css}"
end

Rails.configuration.middleware.insert_before('Rack::Sendfile', 'Rack::Static',
                                             :urls => ['/stylesheets'],
                                             :root => "#{Rails.root}/tmp")