Configuration 在非Rails项目中使用Compass watch挂起

我正在将compass用于一个非Rails项目。我的配置文件位于：

config/compass.rb

我的配置文件如下所示：

http_path = "/"
css_dir = "./example"
sass_dir = "./example/sass"
images_dir = "./example/images"
javascripts_dir = "./example/js"

output_style = :compressed
relative_assets = true

我开始使用罗盘：

compass手表-c config/compass.rb

当我运行这个时，指南针就挂起来了。如果使用

--trace

运行compass并退出，则会得到以下堆栈跟踪：

^CInterrupt on line ["18"] of /Users/me/.gem/ruby/2.0.0/gems/compass-rails-2.0.0/lib/compass-rails.rb:
  /Users/me/.gem/ruby/2.0.0/gems/compass-rails-2.0.0/lib/compass-rails.rb:116:in `configuration'
  /Users/me/.gem/ruby/2.0.0/gems/compass-1.0.0.rc.1/lib/compass/configuration/helpers.rb:21:in `configuration_for'
  /Users/me/.gem/ruby/2.0.0/gems/compass-core-1.0.0.rc.1/lib/compass/configuration.rb:139:in `add_configuration'
  /Users/me/.gem/ruby/2.0.0/gems/compass-1.0.0.rc.1/lib/compass/configuration/helpers.rb:79:in `add_project_configuration'
  /Users/me/.gem/ruby/2.0.0/gems/compass-1.0.0.rc.1/lib/compass/commands/project_base.rb:37:in `add_project_configuration'
  /Users/me/.gem/ruby/2.0.0/gems/compass-1.0.0.rc.1/lib/compass/commands/project_base.rb:25:in `configure!'
  /Users/me/.gem/ruby/2.0.0/gems/compass-1.0.0.rc.1/lib/compass/commands/project_base.rb:15:in `initialize'
  /Users/me/.gem/ruby/2.0.0/gems/compass-1.0.0.rc.1/lib/compass/commands/update_project.rb:41:in `initialize'

因此，似乎调用

compass watch

是使用

compass rails

而不是使用

compass

gem，它需要我没有提供的配置参数，并挂起

$whichcompass

返回：

/Users/me/.gem/ruby/2.0.0/bin/compass

---

这是为什么？我如何解决它？

为了让它正常工作，我使用Bundler并运行了：

$be指南针手表-c./config/compass.rb

注意

be

是

bundle exec

的别名

我仍然不确定

compass-rails

是如何连接到

compass

的