Depend on gdk-pixbuf2-modules as this is now an optional subpackage

gtk3.spec

@@ -18,7 +18,7 @@
 Summary: The GIMP ToolKit (GTK+), a library for creating GUIs for X
 Name: gtk3
 Version: 3.15.12
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: LGPLv2+
 Group: System Environment/Libraries
 URL: http://www.gtk.org
@@ -81,6 +81,9 @@ Requires: libwayland-client%{?_isa} >= %{wayland_version}
 Requires: libwayland-cursor%{?_isa} >= %{wayland_version}
 %endif
 
+# required to support all the different image formats
+Requires: gdk-pixbuf2-modules%{?_isa}
+
 # gtk3 itself includes the Adwaita theme now
 Obsoletes: adwaita-gtk3-theme < 3.13.3
 Provides: adwaita-gtk3-theme = %{version}-%{release}
@@ -343,6 +346,9 @@ gtk-update-icon-cache %{_datadir}/icons/hicolor &>/dev/null || :
 %{_datadir}/installed-tests
 
 %changelog
+* Fri Mar 20 2015 Richard Hughes <rhughes@redhat.com> - 3.15.12-2
+- Depend on gdk-pixbuf2-modules as this is now an optional subpackage
+
 * Tue Mar 17 2015 Kalev Lember <kalevlember@gmail.com> - 3.15.12-1
 - Update to 3.15.12
 - Use license macro for the COPYING file