anchor.diff:      (enFlag "large-tiles" largeTilesSupport null)
     ];
   
  -  nativeBuildInputs = [
  -    yasm
  -  ];
  -
  -  buildInputs = [
  -    fontconfig
  -    freetype
  -    fribidi
  -    harfbuzz
  -  ];
  -
     doCheck = false;
  -  enableParallelBuilding = true;
   
     meta = with stdenv.lib; {
       description = "Library for SSA/ASS subtitles rendering";
  
positive.code:   version = "0.13.1";
  
    src = fetchurl {
      url = "https://github.com/libass/libass/releases/download/${version}/${name}.tar.xz";
      sha256 = "1rrz6is2blx8jqyydcz71y2f5f948blgx14jzi3an756fqc6p8sa";
    };
  
    configureFlags = [
      (enFlag "test" doCheck null)
  
negative.code: , fribidi
  , harfbuzz
  
  , rasterizerSupport ? true # Internal rasterizer
  , largeTilesSupport ? false # Use larger tiles in the rasterizer
  }:
  
  