[2.0.x] Fixed #29125 -- Made Q.deconstruct() deterministic with multiple keyword arguments.

Backport of b95c49c954e3b75678bb258e9fb2ec30d0d960bb from master

3 files changed, 14 insertions, 1 deletions

diff --git a/django/db/models/query_utils.py b/django/db/models/query_utils.py
index 8a889264e5..1ecc5e38c8 100644
--- a/django/db/models/query_utils.py
+++ b/django/db/models/query_utils.py
@@ -57,7 +57,7 @@ class Q(tree.Node):
     def __init__(self, *args, **kwargs):
         connector = kwargs.pop('_connector', None)
         negated = kwargs.pop('_negated', False)
-        super().__init__(children=list(args) + list(kwargs.items()), connector=connector, negated=negated)
+        super().__init__(children=list(args) + sorted(kwargs.items()), connector=connector, negated=negated)
 
     def _combine(self, other, conn):
         if not isinstance(other, Q):
diff --git a/docs/releases/2.0.3.txt b/docs/releases/2.0.3.txt
index 252e51fcf0..c0c9ebb782 100644
--- a/docs/releases/2.0.3.txt
+++ b/docs/releases/2.0.3.txt
@@ -17,3 +17,7 @@ Bugfixes
   (:ticket:`29109`).
 
 * Fixed crash with ``QuerySet.order_by(Exists(...))`` (:ticket:`29118`).
+
+* Made ``Q.deconstruct()`` deterministic with multiple keyword arguments
+  (:ticket:`29125`). You may need to modify ``Q``'s in existing migrations, or
+  accept an autogenerated migration.
diff --git a/tests/queries/test_q.py b/tests/queries/test_q.py
index a90d6794db..2ed4278b77 100644
--- a/tests/queries/test_q.py
+++ b/tests/queries/test_q.py
@@ -60,6 +60,15 @@ class QTests(SimpleTestCase):
         ))
         self.assertEqual(kwargs, {'_connector': 'AND'})
 
+    def test_deconstruct_multiple_kwargs(self):
+        q = Q(price__gt=F('discounted_price'), price=F('discounted_price'))
+        path, args, kwargs = q.deconstruct()
+        self.assertEqual(args, (
+            ('price', F('discounted_price')),
+            ('price__gt', F('discounted_price')),
+        ))
+        self.assertEqual(kwargs, {'_connector': 'AND'})
+
     def test_deconstruct_nested(self):
         q = Q(Q(price__gt=F('discounted_price')))
         path, args, kwargs = q.deconstruct()