title: How to speed up compass watch rendering?
body: <p>The Title says pretty much everything but add more details lets say I have compass project importing many partials files and modules such as sassy-button some partials and modules import themselves other partials or the same one (just to make sure dependencies are always imported someway). </p>
  
  <p>The matter for me here is to speed up the css generation when watching my project for modifications.</p>
  
  <p>Here is how looks my sass project :</p>
  
  <pre><code>modules/
    css3/
    sassy-buttons/
    _sassy-buttons.scss
    _fancyselect.scss
  partials/
    _base.scss
    _typography.scss
    _resetHtml5.scss
    _form.scss
    _ui.scss
    _layout.scss
    _header.scss
    _main-menu.scss
    _variables.scss
  config.rb
  screen.scss
  print.scss
  activity.scss
  testimonials.scss
  default.scss
  </code></pre>
  
  <p>And here is the content of the config.rb file :</p>
  
  <pre class="lang-js prettyprint-override"><code>http_path = "/"
  css_dir = "../../../../../web/static/css"
  sass_dir = "sass"
  images_dir = "img"
  http_images_path = "/static/img"
  generated_images_dir = "img"
  generated_images_path = "../../../../../web/static/img"
  http_generated_images_path = "/static/img"
  
  javascripts_dir = "js"
  fonts_dir = "font" 
  http_fonts_path = "/static/font"
  
  line_comments = true
  output_style = ":expanded"
  </code></pre>