--- virt-manager-4.0.0.old/setup.py
+++ virt-manager-4.0.0/setup.py
@@ -271,7 +271,7 @@
 
         if not self.distribution.no_compile_schemas:
             print("compiling gsettings schemas")
-            gschema_install = os.path.join(self.install_data,
+            gschema_install = os.path.join("__META_PRODTREE__/gtkcore",
                 "share/glib-2.0/schemas")
             self.spawn(["glib-compile-schemas", gschema_install])