anchor.diff:               (markup:markup*
                 `(:li (:a :class "button"
                           :href ,(lisp-url `(%describe-os-package
  -                                           (list (ospama:find-os-package
  -                                                  ,(ospama:name package)))))
  +                                           (ospama:find-os-packages
  +                                            ,(ospama:name package))))
                           ,(object-string package-output))
                       " " ,(ospama:version package))))))
        buffer)
  
positive.code:           (ospama:name (ospama:parent-package output))
            (ospama:name output)))
  (defmethod object-display ((output ospama:os-package-output))
    (let ((pkg (ospama:parent-package output)))
      (format nil "~a:~a~a~a"
              (ospama:name pkg)
              (ospama:name output)
              (make-string (max 1 (- 40
                                     (+ (length (ospama:name pkg))
                                        (length (ospama:name output)))))
                           :initial-element #\ )
              (ospama:synopsis pkg))))
  
  
negative.code:                                           ,@(unless (ospama:expanded-outputs-p package)
                                                `((:a :class "button"
                                                      :href ,(lisp-url '(echo "Computing path & size...")
                                                                       `(ospama:expand-outputs (first (ospama:find-os-packages ,(ospama:name package))))
                                                                       `(%describe-os-package
                                                                         (list (first (ospama:find-os-packages ,(ospama:name package))))))
                                                      "Compute path & size")))
                                            ,(format-outputs (ospama:outputs package)))
                                       (:li "Supported systems: " ,(str:join " " (ospama:supported-systems package)))
  