anchor.diff: -{ lib, stdenv, fetchFromGitHub
  +{ lib, stdenv, fetchFromGitHub, fetchzip
   , meson, ninja, pkg-config
   , python3
   , icu
  
positive.code:     patchShebangs scripts
    '';
  
    checkInputs = [
      gtest
    ];
  
negative.code: 
  stdenv.mkDerivation rec {
    pname = "zimlib";
    version = "7.2.2";
  
    src = fetchFromGitHub {
      owner = "openzim";
      repo = "libzim";
      rev = version;
      sha256 = "sha256-AEhhjinnnMA4NbYL7NVHYeRZX/zfNiidbY/VeFjZuQs=";
    };
  
    testData = fetchzip rec {
      passthru.version = "0.4";
      url = "https://github.com/openzim/zim-testing-suite/releases/download/v${passthru.version}/zim-testing-suite-${passthru.version}.tar.gz";
      sha256 = "sha256-2eJqmvs/GrvOD/pq8dTubaiO9ZpW2WqTNQByv354Z0w=";
    };
  
    nativeBuildInputs = [
  