diff --git a/pkgs/development/libraries/mesa/default.nix b/pkgs/development/libraries/mesa/default.nix
index 94eed4193c3..1c2257998e8 100644
--- a/pkgs/development/libraries/mesa/default.nix
+++ b/pkgs/development/libraries/mesa/default.nix
@@ -22,7 +22,7 @@ else
 */
 
 let
-  version = "11.1.1";
+  version = "11.1.2";
   # this is the default search path for DRI drivers
   driverLink = "/run/opengl-driver" + stdenv.lib.optionalString stdenv.isi686 "-32";
 in
@@ -38,7 +38,7 @@ stdenv.mkDerivation {
         + head (splitString "." version) + ''.x/${version}/mesa-${version}.tar.xz'')
       "https://launchpad.net/mesa/trunk/${version}/+download/mesa-${version}.tar.xz"
     ];
-    sha256 = "087xlxl8dzmhzjilpsdiy19dn106spq120c9ndgnn4qlqm7hgnv4";
+    sha256 = "8f72aead896b340ba0f7a4a474bfaf71681f5d675592aec1cb7ba698e319148b";
   };
 
   prePatch = "patchShebangs .";
diff --git a/pkgs/development/tools/misc/intltool/default.nix b/pkgs/development/tools/misc/intltool/default.nix
index 761cd6edfc2..4ab9fa28491 100644
--- a/pkgs/development/tools/misc/intltool/default.nix
+++ b/pkgs/development/tools/misc/intltool/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, gettext, perl, perlXMLParser }:
+{ stdenv, fetchurl, fetchpatch, gettext, perl, perlXMLParser }:
 
 stdenv.mkDerivation rec {
   name = "intltool-${version}";
@@ -9,6 +9,14 @@ stdenv.mkDerivation rec {
     sha256 = "1karx4sb7bnm2j67q0q74hspkfn6lqprpy5r99vkn5bb36a4viv7";
   };
 
+  # fix "unescaped left brace" errors when using intltool in some cases
+  patches = [(fetchpatch {
+    name = "perl-5.22.patch";
+    url = "https://anonscm.debian.org/viewvc/pkg-gnome/desktop/unstable/intltool"
+      + "/debian/patches/perl5.22-regex-fixes?revision=47255&view=co";
+    sha256 = "17clqczb9fky7hp8czxa0fy82b5478irvz4f3fnans3sqxl95hx3";
+  })];
+
   propagatedBuildInputs = [ gettext perl perlXMLParser ];
 
   meta = with stdenv.lib; {