anchor.diff:  , fribidi
   , harfbuzz_lib
   
  +, rasterizerSupport ? true # Internal rasterizer
   , largeTilesSupport ? false # Use larger tiles in the rasterizer
   }:
   
  
positive.code:   ];
  
    configureFlags = [
      "--${boolEn largeTilesSupport}-large-tiles"
    ];
  
    meta = with stdenv.lib; {
      description = "Library for SSA/ASS subtitles rendering";
  
negative.code:   src = fetchurl {
      url = "https://github.com/libass/libass/releases/download/${version}/"
        + "${name}.tar.xz";
      sha256 = "7065e5f5fb76e46f2042a62e7c68d81e5482dbeeda24644db1bd066e44da7e9d";
    };
  
    nativeBuildInputs = [
  