anchor.diff:  
   in buildPythonApplication rec {
     pname = "ocrmypdf";
  -  version = "9.0.3";
  +  version = "9.2.0";
     disabled = ! python3Packages.isPy3k;
   
     src = fetchFromGitHub {
       owner = "jbarlow83";
       repo = "OCRmyPDF";
       rev = "v${version}";
  -    sha256 = "1qnjdcbwkxxqfahylzl0wj1gk51yi9m8akd4d1rrq37vg2vwdkjy";
  +    sha256 = "1mvc6x5nn242z65pxv39ch71vaikgi89bb0sjbfy2jbw91vk41xa";
     };
   
     nativeBuildInputs = with python3Packages; [
  
positive.code: 
    postPatch = ''
      substituteInPlace src/ocrmypdf/leptonica.py \
        --replace "ffi.dlopen(find_library('lept'))" \
        'ffi.dlopen("${stdenv.lib.makeLibraryPath [leptonica]}/liblept${stdenv.hostPlatform.extensions.sharedLibrary}")'
    '';
  
    # The tests take potentially 20+ minutes, depending on machine
  
negative.code:     pikepdf
      pillow
      reportlab
      setuptools
      tqdm
    ];
  