This is a regression introduced by the fix for bug 1199157, devel_release is not kept in options.
ipdb> self.options <Values at 0x7f000475ac68: {'frontend': None, 'useAufs': False, 'withNetwork': None, 'datadir': '.', 'mode': 'desktop', 'havePrerequists': False, 'cdromPath': None, 'disable_gnu_screen': False, 'partial': False}>
This is a regression introduced by the fix for bug 1199157, devel_release is not kept in options.
ipdb> self.options gnu_screen' : False, 'partial': False}>
<Values at 0x7f000475ac68: {'frontend': None, 'useAufs': False, 'withNetwork': None, 'datadir': '.', 'mode': 'desktop', 'havePrerequists': False, 'cdromPath': None, 'disable_