compass.rb

http_images_path = '/assets/'

full_compass.rb

# This configuration file works with both the Compass command line tool and within Rails.
# Require any additional compass plugins here.
project_type = :rails

# Set this to the root of your project when deployed:
http_path = '/'
http_images_path = '/assets/'

# You can select your preferred output style here (can be overridden via the command line):
output_style = :compressed

# To enable relative paths to assets via compass helper functions. Uncomment:
# relative_assets = true

# To disable debugging comments that display the original location of your selectors. Uncomment:
# line_comments = false

preferred_syntax = :scss

Gemfile

gem 'sass-rails', :git => 'https://github.com/rails/sass-rails.git', :ref => '031236b31eaf20658226a9ae051749cc6647c33f'
gem 'compass', :git => 'https://github.com/chriseppstein/compass.git', :ref => '2c1fcfcad708875d10db65740aabf417abc636a6'
gem 'sprockets', '2.0.0.beta.10'

Gemfile_rc5.rb

gem 'sass-rails', :git => 'https://github.com/rails/sass-rails.git', :ref => '231b14da040c3ad320076cbaaa70190d14b95d37'
gem 'compass', :git => 'https://github.com/chriseppstein/compass.git', :ref => '33263caffe5548a64253976c0a034afe1ed567f4'