class Sprockets::ProcessedAsset

def build_dependency_paths(environment, context)
  dependency_paths = {}
  context._dependency_paths.each do |path|
    dep = DependencyFile.new(path, environment.stat(path).mtime, environment.file_digest(path).hexdigest)
    dependency_paths[dep] = true
  end
  context._dependency_assets.each do |path|
    if path == self.pathname.to_s
      dep = DependencyFile.new(pathname, environment.stat(path).mtime, environment.file_digest(path).hexdigest)
      dependency_paths[dep] = true
    elsif asset = environment.find_asset(path, :bundle => false)
      asset.dependency_paths.each do |d|
        dependency_paths[d] = true
      end
    end
  end
  @dependency_paths = dependency_paths.keys
end