With optimizations on, python will overwrite the nix store. --- wicd-1.7.0/in/scripts=wicd.in 2011-04-05 14:31:09.733096865 -0400 +++ wicd-1.7.0/in/scripts=wicd.in 2011-04-05 14:31:16.397096864 -0400 @@ -1,3 +1,3 @@ #!/bin/bash -exec %PYTHON% -O %SHARE%daemon/wicd-daemon.py $@ +exec %PYTHON% -B %SHARE%daemon/wicd-daemon.py $@ --- wicd-1.7.2.4/wicd/wicd-daemon.py 2012-04-30 21:19:45.000000000 +0200 +++ wicd-1.7.2.4/wicd/wicd-daemon.pynew 2013-03-14 21:35:23.250306592 +0100 @@ -1812,7 +1812,7 @@ daemon = WicdDaemon(wicd_bus, auto_connect=auto_connect) child_pid = None if not no_poll: - child_pid = Popen([wpath.python, "-O", + child_pid = Popen([wpath.python, "-B", os.path.join(wpath.daemon, "monitor.py")], shell=False, close_fds=True).pid atexit.register(on_exit, child_pid)