anchor.diff:    ];
   
     configureFlags = [
  -    "--${boolEn doCheck}-test"
  -    "--disable-profile"
  -    "--${boolEn (fontconfig != null)}-fontconfig"
  -    "--disable-directwrite" # Windows
  -    "--disable-coretext" # OSX
  -    "--enable-require-system-font-provider"
  -    "--${boolEn (harfbuzz_lib != null)}-harfbuzz"
  -    "--${boolEn (nasm != null)}-asm"
  -    "--${boolEn rasterizerSupport}-rasterizer"
       "--${boolEn largeTilesSupport}-large-tiles"
     ];
  -
  -  doCheck = false;
   
     meta = with stdenv.lib; {
       description = "Library for SSA/ASS subtitles rendering";
  
positive.code:   src = fetchurl {
      url = "https://github.com/libass/libass/releases/download/${version}/"
        + "${name}.tar.xz";
      sha256 = "7065e5f5fb76e46f2042a62e7c68d81e5482dbeeda24644db1bd066e44da7e9d";
    };
  
    nativeBuildInputs = [
  
negative.code: , fribidi
  , harfbuzz_lib
  
  , largeTilesSupport ? false # Use larger tiles in the rasterizer
  }:
  
  