anchor.diff:  , libxrender
   , lzo
   , opengl-dummy
  +, xextproto
   , xorg
  +, xproto
   , zlib
   }:
   
  
positive.code:     optionalString;
  in
  stdenv.mkDerivation rec {
    name = "cairo-1.14.10";
  
    src = fetchurl {
      url = "https://cairographics.org/releases/${name}.tar.xz";
      multihash = "QmceAfwie7MyRPHeezGiTA7aUtMVrMKdT6v7YVq8yPavj7";
      hashOutput = false;
      sha256 = "7e87878658f2c9951a14fc64114d4958c0e65ac47530b8ac3078b2ce41b66a09";
    };
  
    nativeBuildInputs = [
  
negative.code:     '';
  
    configureFlags = [
      "--disable-valgrind"
      "--${boolEn opengl-dummy.glx}-xlib"
      "--${boolEn opengl-dummy.glx}-xlib-xrender"
  