title: In Rails 3.1, is it really impossible to avoid including duplicate copies of stylesheets?
body: <p>I'm running into an upsetting issue when trying to share variables and mixins across Sass stylesheets. </p>
  
  <p>If I use <code>@import</code> to include a global stylesheet – one which includes global colors, mixins, etc. – it gets included <em>again</em> when Rails combines all stylesheets referenced in the manifest file.</p>
  
  <p>Alternatively, if my manifest file does <em>not</em> include the global stylesheet, but multiple files in the manifest import it, the global stylesheet will <em>still</em> be included more than once. <strong><em>GAH.</em></strong></p>
  
  <p>How can you get around this? Does Sass have secret inclusion guards? Am I doing something terribly wrong?</p>