anchor.diff:  
     bashInteractive = appendToName "interactive" (callPackage ../shells/bash {
       interactive = true;
  -    texinfo = texinfo5;
     });
   
     bashCompletion = callPackage ../shells/bash-completion { };
  
positive.code: 
    docbook2x = callPackage ../tools/typesetting/docbook2x {
      inherit (perlPackages) XMLSAX XMLParser XMLNamespaceSupport;
      texinfo = texinfo5;
    };
  
    dosfstools = callPackage ../tools/filesystems/dosfstools { };
  
negative.code: 
      # This is usually a newer version of Org-Mode than that found in GNU Emacs, so
      # we want it to have higher precedence.
      org = hiPrio (callPackage ../applications/editors/emacs-modes/org { };
  
      org2blog = callPackage ../applications/editors/emacs-modes/org2blog { };
  
  