anchor.diff:      patchShebangs scripts
     '';
   
  +  mesonFlags = [  "-Dtest_data_dir=${testData}" ];
  +
     checkInputs = [
       gtest
     ];
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "zimlib";
    version = "6.3.2";
  
    src = fetchFromGitHub {
      owner = "openzim";
      repo = "libzim";
      rev = version;
      sha256 = "sha256-xlYu74akK9WFy86hcQe7zp11TImwl8llgDIZBRgmbAI=";
    };
  
    nativeBuildInputs = [
  
negative.code: { lib, stdenv, fetchFromGitHub, fetchzip
  , meson, ninja, pkg-config
  , python3
  , icu
  