# File lib/less/rails/import_processor.rb, line 39
      def self.depend_on(scope, source, base=File.dirname(scope.logical_path))
        import_paths = source.scan(IMPORT_SCANNER).flatten.compact.uniq
        import_paths.each do |path|
          pathname = PATHNAME_FINDER.call(scope, path) || PATHNAME_FINDER.call(scope, File.join(base, path))
          scope.depend_on(pathname) if pathname && pathname.to_s.ends_with?('.less')
          depend_on scope, File.read(pathname), File.dirname(path) if pathname
        end
        source
      end