nixpkgs/pkgs/development/libraries/qt-5/5.4/qtbase/dlopen-gtkstyle.patch

Index: qt-everywhere-opensource-src-5.4.2/qtbase/src/widgets/styles/qgtk2painter.cpp
===================================================================
--- qt-everywhere-opensource-src-5.4.2.orig/qtbase/src/widgets/styles/qgtk2painter.cpp
+++ qt-everywhere-opensource-src-5.4.2/qtbase/src/widgets/styles/qgtk2painter.cpp
@@ -96,7 +96,7 @@ static void initGtk()
     static bool initialized = false;
     if (!initialized) {
         // enforce the "0" suffix, so we'll open libgtk-x11-2.0.so.0
-        QLibrary libgtk(QLS("gtk-x11-2.0"), 0, 0);
+        QLibrary libgtk(QLS("@gtk@/lib/libgtk-x11-2.0"), 0, 0);
 
         QGtk2PainterPrivate::gdk_pixmap_new = (Ptr_gdk_pixmap_new)libgtk.resolve("gdk_pixmap_new");
         QGtk2PainterPrivate::gdk_pixbuf_get_from_drawable = (Ptr_gdk_pixbuf_get_from_drawable)libgtk.resolve("gdk_pixbuf_get_from_drawable");
Index: qt-everywhere-opensource-src-5.4.2/qtbase/src/widgets/styles/qgtkstyle_p.cpp
===================================================================
--- qt-everywhere-opensource-src-5.4.2.orig/qtbase/src/widgets/styles/qgtkstyle_p.cpp
+++ qt-everywhere-opensource-src-5.4.2/qtbase/src/widgets/styles/qgtkstyle_p.cpp
@@ -326,7 +326,7 @@ void QGtkStylePrivate::gtkWidgetSetFocus
 void QGtkStylePrivate::resolveGtk() const
 {
     // enforce the "0" suffix, so we'll open libgtk-x11-2.0.so.0
-    QLibrary libgtk(QLS("gtk-x11-2.0"), 0, 0);
+    QLibrary libgtk(QLS("@gtk@/lib/libgtk-x11-2.0"), 0, 0);
 
     gtk_init = (Ptr_gtk_init)libgtk.resolve("gtk_init");
     gtk_window_new = (Ptr_gtk_window_new)libgtk.resolve("gtk_window_new");
@@ -424,8 +424,8 @@ void QGtkStylePrivate::resolveGtk() cons
     pango_font_description_get_family = (Ptr_pango_font_description_get_family)libgtk.resolve("pango_font_description_get_family");
     pango_font_description_get_style = (Ptr_pango_font_description_get_style)libgtk.resolve("pango_font_description_get_style");
 
-    gnome_icon_lookup_sync = (Ptr_gnome_icon_lookup_sync)QLibrary::resolve(QLS("gnomeui-2"), 0, "gnome_icon_lookup_sync");
-    gnome_vfs_init= (Ptr_gnome_vfs_init)QLibrary::resolve(QLS("gnomevfs-2"), 0, "gnome_vfs_init");
+    gnome_icon_lookup_sync = (Ptr_gnome_icon_lookup_sync)QLibrary::resolve(QLS("@libgnomeui@/lib/libgnomeui-2"), 0, "gnome_icon_lookup_sync");
+    gnome_vfs_init= (Ptr_gnome_vfs_init)QLibrary::resolve(QLS("@gnome_vfs@/lib/libgnomevfs-2"), 0, "gnome_vfs_init");
 }
 
 /* \internal
@@ -593,9 +593,9 @@ void QGtkStylePrivate::cleanupGtkWidgets
 static bool resolveGConf()
 {
     if (!QGtkStylePrivate::gconf_client_get_default) {
-        QGtkStylePrivate::gconf_client_get_default = (Ptr_gconf_client_get_default)QLibrary::resolve(QLS("gconf-2"), 4, "gconf_client_get_default");
-        QGtkStylePrivate::gconf_client_get_string =  (Ptr_gconf_client_get_string)QLibrary::resolve(QLS("gconf-2"), 4, "gconf_client_get_string");
-        QGtkStylePrivate::gconf_client_get_bool =  (Ptr_gconf_client_get_bool)QLibrary::resolve(QLS("gconf-2"), 4, "gconf_client_get_bool");
+        QGtkStylePrivate::gconf_client_get_default = (Ptr_gconf_client_get_default)QLibrary::resolve(QLS("@gconf@/lib/libgconf-2"), 4, "gconf_client_get_default");
+        QGtkStylePrivate::gconf_client_get_string =  (Ptr_gconf_client_get_string)QLibrary::resolve(QLS("@gconf@/lib/libgconf-2"), 4, "gconf_client_get_string");
+        QGtkStylePrivate::gconf_client_get_bool =  (Ptr_gconf_client_get_bool)QLibrary::resolve(QLS("@gconf@/lib/libgconf-2"), 4, "gconf_client_get_bool");
     }
     return (QGtkStylePrivate::gconf_client_get_default !=0);
 }