first comit

venv/lib/python3.10/site-packages/django/contrib/postgres/aggregates/mixins.py

@@ -0,0 +1,29 @@
+from django.db.models.expressions import OrderByList
+
+
+class OrderableAggMixin:
+    def __init__(self, *expressions, ordering=(), **extra):
+        if isinstance(ordering, (list, tuple)):
+            self.order_by = OrderByList(*ordering)
+        else:
+            self.order_by = OrderByList(ordering)
+        super().__init__(*expressions, **extra)
+
+    def resolve_expression(self, *args, **kwargs):
+        self.order_by = self.order_by.resolve_expression(*args, **kwargs)
+        return super().resolve_expression(*args, **kwargs)
+
+    def get_source_expressions(self):
+        if self.order_by.source_expressions:
+            return super().get_source_expressions() + [self.order_by]
+        return super().get_source_expressions()
+
+    def set_source_expressions(self, exprs):
+        if isinstance(exprs[-1], OrderByList):
+            *exprs, self.order_by = exprs
+        return super().set_source_expressions(exprs)
+
+    def as_sql(self, compiler, connection):
+        order_by_sql, order_by_params = compiler.compile(self.order_by)
+        sql, sql_params = super().as_sql(compiler, connection, ordering=order_by_sql)
+        return sql, (*sql_params, *order_by_params)