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
22788	Custom migration operations are rewritten incorrectly	Matthew Schinckel	nobody	"I've written a custom migration operation, and was in the process of writing a management command to write a migration file, using the MigrationWriter class.

It's almost all perfect, except that the MigrationWriter class assumes that the migration operation will be in django.db.migrations:

https://github.com/django/django/blob/master/django/db/migrations/writer.py#L47

I suspect that the MigrationWriter will also be used for things like squashing migrations, so this problem may appear with custom migration operations then.

I suggest that it should inspect the migration operation, and if it's not in the `django.db.migrations` module, add the relevant module to the imports, and use the correct path for the operation."	Bug	closed	Migrations	dev	Normal	fixed			Accepted	1	0	0	0	0	0