# File lib/chef/provider/package/yum.rb, line 365
          def compare(y)
            x = self

            # easy! :)
            return 0 if x.nevra == y.nevra

            # compare name
            if x.n.nil? == false and y.n.nil?
              return 1
            elsif x.n.nil? and y.n.nil? == false
              return -1
            elsif x.n.nil? == false and y.n.nil? == false
              if x.n < y.n
                return -1
              elsif x.n > y.n
                return 1
              end
            end

            # compare version
            if x.version > y.version
              return 1
            elsif x.version < y.version
              return -1
            end

            # compare arch
            if x.a.nil? == false and y.a.nil?
              return 1
            elsif x.a.nil? and y.a.nil? == false
              return -1
            elsif x.a.nil? == false and y.a.nil? == false
              if x.a < y.a
                return -1
              elsif x.a > y.a
                return 1
              end
            end

            return 0
          end