anchor.diff:      EOF
       chmod +x $out/bin/jdiskreport
   
  -    ${desktopItem.buildCommand}
  +    runHook postInstall
     '';
  +
  +  desktopItems = [ desktopItem ];
   
     meta = with stdenv.lib; {
       homepage = "http://www.jgoodies.com/freeware/jdiskreport/";
  
positive.code: { stdenv, fetchurl, unzip, jre, makeDesktopItem }:
  
  let
    desktopItem = makeDesktopItem {
  
negative.code:     sha256 = "0d5mzkwsbh9s9b1vyvpaawqc09b0q41l2a7pmwf7386b1fsx6d58";
    };
  
    nativeBuildInputs = [ copyDesktopItems ];
    buildInputs = [ unzip ];
    inherit jre;
  
    installPhase = ''
      runHook preInstall
  
      unzip $src
  
  