anchor.diff:  
     preBuild = ''
       substituteInPlace scripts/scripts.pro \
  -      --replace /bin/true ${coreutils}/bin/true \
  -      --replace /usr/bin $out/bin
  -    substituteInPlace src/src.pro \
  -      --replace /usr/bin $out/bin \
  -      --replace /usr/share $out/share
  -    for i in doc/doc.pro doc/stats/stats.pro
  -    do
  -      substituteInPlace $i \
  -        --replace /usr/share $out/share
  -    done
  +      --replace /bin/true ${coreutils}/bin/true
   
  -    for i in src/MainWindow.cpp src/FileSizeStatsWindow.cpp
  +    for i in src/SysUtil.cpp src/FileSizeStatsWindow.cpp
       do
         substituteInPlace $i \
           --replace /usr/bin/xdg-open ${xdg_utils}/bin/xdg-open
  
positive.code:     owner = "shundhammer";
      repo = "qdirstat";
      rev = "${version}";
      sha256 = "1ppasbr0mq301q6n3rm0bsmprs7vgkcjmmc0gbgqpgw84nmp9fqh";
    };
  
    nativeBuildInputs = [ qmake makeWrapper ];
  
negative.code:     done
      substituteInPlace src/StdCleanup.cpp \
        --replace /bin/bash ${bash}/bin/bash
    '';
    postPatch = ''
      export qmakeFlags="$qmakeFlags INSTALL_PREFIX=$out"
    '';
  
    postInstall = ''
  