anchor.diff:      # give file previews out of the box
       substituteInPlace ranger/config/rc.conf \
         --replace "#set preview_script ~/.config/ranger/scope.sh" "set preview_script $out/share/doc/ranger/config/scope.sh"
  -  '' + optionalString imagePreviewSupport ''
  +  '' + lib.optionalString imagePreviewSupport ''
       substituteInPlace ranger/ext/img_display.py \
         --replace /usr/lib/w3m ${w3m}/libexec/w3m
   
  
positive.code:   meta =  with lib; {
      description = "File manager with minimalistic curses interface";
      homepage = "http://ranger.github.io/";
      license = licenses.gpl3;
      platforms = platforms.unix;
      maintainers = [ maintainers.toonn maintainers.magnetophon ];
    };
  }
  
negative.code: 
    LC_ALL = "en_US.UTF-8";
  
    checkInputs = with python3Packages; [ pytestCheckHook ];
    propagatedBuildInputs = [ file ]
      ++ lib.optionals (imagePreviewSupport) [ python3Packages.pillow ];
  
    preConfigure = ''
      ${lib.optionalString (highlight != null) ''
  