anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "exiv2";
  -  version = "0.27.2";
  +  version = "0.27.3";
   
     src = fetchFromGitHub {
       owner = "exiv2";
       repo  = "exiv2";
       rev = "v${version}";
  -    sha256 = "0n8il52yzbmvbkryrl8waz7hd9a2fdkw8zsrmhyh63jlvmmc31gf";
  +    sha256 = "0d294yhcdw8ziybyd4rp5hzwknzik2sm0cz60ff7fljacv75bjpy";
     };
   
     patches = [
  -    # included in next release
  +    # Fix aarch64 build https://github.com/Exiv2/exiv2/pull/1271
       (fetchpatch {
  -      name = "cve-2019-20421.patch";
  -      url = "https://github.com/Exiv2/exiv2/commit/a82098f4f90cd86297131b5663c3dec6a34470e8.patch";
  -      sha256 = "16r19qb9l5j43ixm5jqid9sdv5brlkk1wq0w79rm5agxq4kblfyc";
  -      excludes = [ "tests/bugfixes/github/test_issue_1011.py" "test/data/Jp2Image_readMetadata_loop.poc" ];
  +      name = "cmake-fix-aarch64.patch";
  +      url = "https://github.com/Exiv2/exiv2/commit/bbe0b70840cf28b7dd8c0b7e9bb1b741aeda2efd.patch";
  +      sha256 = "13zw1mn0ag0jrz73hqjhdsh1img7jvj5yddip2k2sb5phy04rzfx";
       })
     ];
   
  
positive.code:     )
    '';
  
    # Fix CMake export paths.
    postFixup = ''
      sed -i "$dev/lib/cmake/exiv2/exiv2Config.cmake" \
          -e "/INTERFACE_INCLUDE_DIRECTORIES/ s@\''${_IMPORT_PREFIX}@$dev@" \
  
negative.code:     ''}
  
      ${stdenv.lib.optionalString stdenv.isDarwin ''
        # Removing tests depending on charset conversion
        substituteInPlace ../test/Makefile --replace "conversions.sh" ""
        rm -f ../tests/bugfixes/redmine/test_issue_460.py
        rm -f ../tests/bugfixes/redmine/test_issue_662.py
       ''}
    '';
  
    # With CMake we have to enable samples or there won't be
  