id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
24566	MigrationWriter doesn't serialize timedelta	Marten Kenbeek	nobody	"`makemigrations` fails when using a `timedelta` object as a default value for a model field. 

As the docs explicitly state that the new `DurationField` is ""modeled in Python by `timedelta`"", I'm categorizing this as a bug in 1.8 rather than a new feature. "	Bug	closed	Migrations	1.8	Release blocker	fixed			Ready for checkin	1	0	0	0	1	0