yams #109253 evaluate syntactif sugar at schema building time [open]

rather than building object instanciation time. This would allow to do things like:

descr = Person.get_relation('description') descr.maxsize = 300

which is currently not working because maxsize is turned into SizeConstraint straight at the attribute building object instanciation and not handled anymore later, creating inconsistancy between object instanciation and later modification.