anchor.diff:  
   with {
     inherit (stdenv)
  -    isLinux;
  +    targetSystem;
     inherit (stdenv.lib)
  +    elem
       optionals
  +    platforms
       wtFlag;
   };
   
  
positive.code:       gpl2Plus
        lgpl21Plus
      ];
      maintainers = with maintainers; [ ];
      platforms = with platforms;
        i686-linux
        ++ x86_64-linux;
    };
  }
  
negative.code: 
    buildInputs = [
      libplist
    ] ++ optionals (elem targetSystem platforms.linux) [
      inotify-tools
    ];
  
    configureFlags = [
      # Flag is not a boolean
      (if elem targetSystem platforms.linux then
         null
       else
         "--without-inotify")
  