make imports work again

src/c3nav/mapdata/models/update.py

@@ -5,7 +5,6 @@ import time
 from contextlib import contextmanager, suppress, nullcontext
 from functools import cached_property
 from sqlite3 import DatabaseError
-from typing import TypeAlias
 
 from django.conf import settings
 from django.core.cache import cache
@@ -18,9 +17,7 @@ from shapely.ops import unary_union
 from c3nav.mapdata.tasks import process_map_updates, delete_map_cache_key
 from c3nav.mapdata.utils.cache.changes import GeometryChangeTracker
 from c3nav.mapdata.utils.cache.local import per_request_cache
-
-
-MapUpdateTuple: TypeAlias = tuple[int, int]
+from c3nav.mapdata.utils.cache.types import MapUpdateTuple
 
 
 class MapUpdate(models.Model):

src/c3nav/mapdata/utils/cache/changes.py

@@ -3,7 +3,7 @@ import os
 from django.db.models.signals import m2m_changed, post_delete
 from shapely.ops import unary_union
 
-from c3nav.mapdata.models.update import MapUpdateTuple
+from c3nav.mapdata.utils.cache.types import MapUpdateTuple
 from c3nav.mapdata.utils.cache.maphistory import MapHistory
 from c3nav.mapdata.utils.models import get_submodels
 

src/c3nav/mapdata/utils/cache/maphistory.py

@@ -6,7 +6,7 @@ from shapely import Polygon, MultiPolygon
 
 import numpy as np
 
-from c3nav.mapdata.models.update import MapUpdateTuple
+from c3nav.mapdata.utils.cache.types import MapUpdateTuple
 from c3nav.mapdata.utils.cache.indexed import LevelGeometryIndexed
 
 

src/c3nav/mapdata/utils/cache/types.py

@@ -0,0 +1,3 @@
+from typing import TypeAlias
+
+MapUpdateTuple: TypeAlias = tuple[int, int]