mutter: fix failure on i686

pkgs/desktops/gnome-3/3.16/core/mutter/default.nix

@@ -4,11 +4,11 @@
 
 
 stdenv.mkDerivation rec {
-  name = "mutter-${gnome3.version}.1.1";
+  name = "mutter-${gnome3.version}.2";
 
   src = fetchurl {
     url = "mirror://gnome/sources/mutter/${gnome3.version}/${name}.tar.xz";
-    sha256 = "07059jmwhc7zf2gww2xw94hhy4csjj2v30ivyzllbas2nvv88l3r";
+    sha256 = "0qq7gpkljn1z45sg2sxvmia52krj4ck2541iar89z99s1cppaasa";
   };
 
   # fatal error: gio/gunixfdlist.h: No such file or directory
@@ -27,6 +27,8 @@ stdenv.mkDerivation rec {
       --prefix XDG_DATA_DIRS : "$GSETTINGS_SCHEMAS_PATH"
   '';
 
+  patches = [ ./x86.patch ];
+
   meta = with stdenv.lib; {
     platforms = platforms.linux;
     maintainers = [ maintainers.lethalman ];

pkgs/desktops/gnome-3/3.16/core/mutter/x86.patch

@@ -0,0 +1,20 @@
+--- mutter-3.16.2/src/core/window.c.orig	2015-05-26 10:52:41.382834963 +0200
++++ mutter-3.16.2/src/core/window.c	2015-05-26 10:53:03.039948034 +0200
+@@ -3499,7 +3499,7 @@
+ 
+ static MetaMonitorInfo *
+ find_monitor_by_winsys_id (MetaWindow *window,
+-                           guint       winsys_id)
++                           gint       winsys_id)
+ {
+   int i;
+ 
+@@ -3618,7 +3618,7 @@
+    */
+ 
+   gboolean did_placement;
+-  guint old_output_winsys_id;
++  gint old_output_winsys_id;
+   MetaRectangle unconstrained_rect;
+   MetaRectangle constrained_rect;
+   MetaMoveResizeResultFlags result = 0;