diff --git a/pkgs/development/libraries/cairo/default.nix b/pkgs/development/libraries/cairo/default.nix
index d21f303e741..72ea24c9f8a 100644
--- a/pkgs/development/libraries/cairo/default.nix
+++ b/pkgs/development/libraries/cairo/default.nix
@@ -21,7 +21,8 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs =
-    [ pkgconfig x11 fontconfig xlibs.libXrender ]
+    [ pkgconfig x11 fontconfig ] 
+    ++ stdenv.lib.optional (!stdenv.isDarwin) xlibs.libXrender
     ++ stdenv.lib.optionals xcbSupport [ libxcb xcbutil ]
 
     # On non-GNU systems we need GNU Gettext for libintl.
diff --git a/pkgs/development/libraries/pango/1.30.x.nix b/pkgs/development/libraries/pango/1.30.x.nix
index 2fd828a8737..c32891b95cf 100644
--- a/pkgs/development/libraries/pango/1.30.x.nix
+++ b/pkgs/development/libraries/pango/1.30.x.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, pkgconfig, gettext, x11, glib, cairo, libpng }:
+{ stdenv, fetchurl, pkgconfig, gettext, x11, glib, cairo, libpng, fontconfig }:
 
 stdenv.mkDerivation rec {
   name = "pango-1.30.1";
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
     sha256 = "3a8c061e143c272ddcd5467b3567e970cfbb64d1d1600a8f8e62435556220cbe";
   };
 
-  buildInputs = stdenv.lib.optional stdenv.isDarwin gettext;
+  buildInputs = stdenv.lib.optionals stdenv.isDarwin [ gettext fontconfig ];
 
   nativeBuildInputs = [ pkgconfig ];