Rails 3.2 rake編譯問題

Question

突然不能推到Heroku！ 錯誤消息說：

未初始化的常數Haml :: Util :: Sass

（相同的代碼和庫在2天前工作正常！）

編譯顯然在這行application.rb上失敗了：

Bundler.require(*Rails.groups(:assets => %w(development test)))

在嘗試編譯時，我得到了這個：

無法檢測rake任務確保您可以針對您的應用運行$ bundle exec rake -P ，不存在任何環境變量並使用Gemfile的生產組。 這可能是有意的，如果您希望運行rake任務取消構建（CTRL + C）並修復錯誤然后提交修復：rake aborted！
未初始化的常數Haml :: Util :: Sass

完整堆棧跟蹤：

/tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/haml-3.1.6/lib/haml/util.rb:348:in `try_sass'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/haml-3.1.6/lib/sass/rails3_shim.rb:1:in `<top (required)>'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/sass-3.3.2/lib/sass/root.rb:1:in `<top (required)>'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/sass-3.3.2/lib/sass/util.rb:10:in `<top (required)>'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/sass-3.3.2/lib/sass/version.rb:2:in `<top (required)>'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/haml-3.1.6/lib/haml/util.rb:347:in `try_sass'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/haml-3.1.6/lib/sass.rb:6:in `<top (required)>'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/bundler-1.5.2/lib/bundler/runtime.rb:76:in `require'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/bundler-1.5.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
    gems/bundler-1.5.2/lib/bundler/runtime.rb:72:in `each'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
    gems/bundler-1.5.2/lib/bundler/runtime.rb:72:in `block in require'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
    gems/bundler-1.5.2/lib/bundler/runtime.rb:61:in `each'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
    gems/bundler-1.5.2/lib/bundler/runtime.rb:61:in `require'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/bundler-1.5.2/lib/bundler.rb:131:in `require'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/config/application.rb:7:i
n `<top (required)>'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/Rakefile:5:in `require'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/Rakefile:5:in `<top (requ
ired)>'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/rake-10.0.3/lib/rake/rake_module.rb:25:in `load'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/rake-10.0.3/lib/rake/rake_module.rb:25:in `load_rakefile'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/rake-10.0.3/lib/rake/application.rb:583:in `raw_load_rakefile'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/rake-10.0.3/lib/rake/application.rb:89:in `block in load_rakefile'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/rake-10.0.3/lib/rake/application.rb:88:in `load_rakefile'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/rake-10.0.3/lib/rake/application.rb:72:in `block in run'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/rake-10.0.3/lib/rake/application.rb:160:in `standard_exception_handling'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/rake-10.0.3/lib/rake/application.rb:70:in `run'
       /tmp/build_ae51e5ec-bc73-4105-bce5-33edbe8bee32/vendor/bundle/ruby/1.9.1/
gems/rake-10.0.3/bin/rake:33:in `<top (required)>'
       vendor/bundle/bin/rake:16:in `load'

   vendor/bundle/bin/rake:16:in `<main>'
-----> WARNINGS:
   Injecting plugin 'rails_log_stdout'
   Injecting plugin 'rails3_serve_static_assets'
   Add 'rails_12factor' gem to your Gemfile to skip plugin injection
   Removing `Gemfile.lock` because it was generated on Windows.
   Bundler will do a full resolve so native gems are handled properly.
   This may result in unexpected gem versions being used in your app.
   In rare occasions Bundler may not be able to resolve your dependencies at all.
   https://devcenter.heroku.com/articles/bundler-windows-gemfile
-----> Discovering process types
   Procfile declares types -> (none)
   Default types for Ruby  -> console, rake, web, worker

的Gemfile：

source 'https://rubygems.org'
ruby "1.9.3"
gem 'rails', '3.2.11'
gem 'useragent'
gem 'rubyzip', '~> 1.0.0'
gem 'vpim'
gem 'ri_cal'
gem "geocoder"
gem 'sass'
gem 'haml', '3.1.6'
gem 'settingslogic', '~> 2.0.8'
gem 'devise', '2.1.2'
gem 'omniauth', '1.1.0'
gem 'omniauth-facebook', '1.4.1'
gem 'omniauth-twitter'
gem 'omniauth-linkedin'
gem "omniauth-google", "~> 1.0.2"
gem 'paperclip', '~> 3.3.0'
gem 'aws-s3', '~> 0.6.3'
gem 'aws-sdk', '~> 1.6.9'
gem 'delayed_job_active_record', '0.4.4'
gem "fb_graph", '2.4.19'
gem "linkedin"
gem "twitter"
gem "nokogiri", "~> 1.5.5"
gem "gdata", :git=> "https://github.com/agentrock/gdata.git"
gem 'acts_as_api', "0.4.1"
gem "rails_admin"
gem "meta_search", "~> 1.1.3"
gem "possessive", "~> 1.0.1"
gem "rake", "10.0.3"
gem 'newrelic_rpm'
gem "json", "1.7.7"
gem "omniauth-google-oauth2"
gem "google-api-client", :require => 'google/api_client'
gem "rest-client", "~> 1.6.7"
gem "customerio"

group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'
  gem 'uglifier', '>= 1.0.3'
end

gem 'jquery-rails', '~> 2.1'
gem 'jquery-ui-rails', '~> 2.0.0'
gem 'jquery-fileupload-rails','~> 0.3.5'

group :development, :test do
  gem 'rspec-rails', '~> 2.13.0'
  gem 'factory_girl_rails', '4.0.0'
  gem "spork", "~> 0.9.2"
  gem 'hoe', '~> 3.4.0'
end

group :test do
  gem "shoulda",          ">=3.0.1"
  gem 'shoulda-matchers', "1.4.0"
  gem 'faker'
  gem 'capybara'
  gem 'guard-rspec'
  gem 'launchy'
end

group :development do
  gem 'sqlite3', '1.3.7'
end

group :staging, :production do
  gem 'pg', '0.13.2'
end

Answer 1

你正在使用haml 3.1.6，這是在這個版本的sass上打破。

最好的解決方法是更新到最新版本的haml 4.0.x：

$ bundle update haml haml-rails