reduce from 3 to 2 packages

src/nominatim_api/v1/format.py

@@ -11,7 +11,7 @@ from typing import List, Dict, Mapping, Any
 import collections
 import datetime as dt
 
-from nominatim_core.utils.json_writer import JsonWriter
+from ..utils.json_writer import JsonWriter
 from ..status import StatusResult
 from ..results import DetailedResult, ReverseResults, SearchResults, \
                       AddressLines, AddressLine

src/nominatim_api/v1/format_json.py

@@ -9,7 +9,7 @@ Helper functions for output of results in json formats.
 """
 from typing import Mapping, Any, Optional, Tuple, Union
 
-from nominatim_core.utils.json_writer import JsonWriter
+from ..utils.json_writer import JsonWriter
 from ..results import AddressLines, ReverseResults, SearchResults
 from . import classtypes as cl
 

src/nominatim_api/v1/server_glue.py

@@ -17,8 +17,8 @@ from urllib.parse import urlencode
 
 import sqlalchemy as sa
 
-from nominatim_core.errors import UsageError
-from nominatim_core.config import Configuration
+from ..errors import UsageError
+from ..config import Configuration
 from .. import logging as loglib
 from ..core import NominatimAPIAsync
 from .format import dispatch as formatting