--- a/meta/classes/sstate.bbclass
+++ b/meta/classes/sstate.bbclass
@@ -507,7 +507,11 @@ python sstate_task_postfunc () {
     sstate_install(shared_state, d)
     for intercept in shared_state['interceptfuncs']:
         bb.build.exec_func(intercept, d)
+    omask = os.umask(002)
+    if omask != 002:
+       bb.note("Using umask 002 (not %03o) for sstate packaging" % omask)
     sstate_package(shared_state, d)
+    os.umask(omask)

but this is clearly not ideal for general consumption either since some
people might actually want umask 022 for those directories.  The ideal