anchor.diff:  
   python3Packages.buildPythonApplication rec {
     pname = "bleachbit";
  -  version = "4.0.0";
  +  version = "4.4.0";
   
     format = "other";
   
     src = fetchurl {
       url = "mirror://sourceforge/${pname}/${pname}-${version}.tar.bz2";
  -    sha256 = "1dn3h6lr9ldbfpvgq9sdlk972sxhwalgj2f377qbqibm3yfxzpil";
  +    sha256 = "0kqqfzq6bh03n7kxb9vd483bqi1cklfvj35a7h4iqk96sq1xv8z6";
     };
   
     nativeBuildInputs = [
  
positive.code:     "prefix=${placeholder "out"}"
    ];
  
    # prevent double wrapping from wrapGApps and wrapPythonProgram
    dontWrapGApps = true;
    makeWrapperArgs = [
      "\${gappsWrapperArgs[@]}"
  
negative.code:   postPatch = ''
      find -type f -exec sed -i -e 's@/usr/share@${placeholder "out"}/share@g' {} \;
      find -type f -exec sed -i -e 's@/usr/bin@${placeholder "out"}/bin@g' {} \;
      find -type f -exec sed -i -e 's@${placeholder "out"}/bin/python3@${python3Packages.python}/bin/python3@' {} \;
    '';
  
    dontBuild = true;
  