Try fixing mypy mypyc wheels

Author: ilevkivskyi

mypy/nativeparse.py

@@ -19,17 +19,10 @@
 from __future__ import annotations
 
 import os
-import sys
 import time
 from typing import Final, cast
 
-try:
-    import ast_serialize  # type: ignore[import-not-found, unused-ignore]
-except ImportError:
-    print("error: ast-serialize package not installed")
-    print("note: to install run `pip install ast-serialize`")
-    sys.exit(2)
-
+import ast_serialize
 from librt.internal import (
     read_float as read_float_bare,
     read_int as read_int_bare,

pyproject.toml

@@ -14,6 +14,8 @@ requires = [
     # the following is from build-requirements.txt
     "types-psutil",
     "types-setuptools",
+    # required to work around a mypyc import bug
+    "ast-serialize>=0.3.0,<1.0.0",
 ]
 build-backend = "setuptools.build_meta"