Fix merge

Author: ilevkivskyi

mypy/ipc.py

@@ -14,11 +14,13 @@
 import sys
 import tempfile
 from collections.abc import Callable
+from select import select
 from types import TracebackType
 from typing import Any, Final
 
 from librt.internal import ReadBuffer, WriteBuffer
 
+from mypy.cache import read_json, write_json
 
 if sys.platform == "win32":
     # This may be private, but it is needed for IPC on Windows, and is basically stable