fix: pin the versions of grpcio and grpcio-tools

Changes:

    1. Narrow down the version of grpcio and grpcio-tools to correctly fix protobuf 4.
    2. Fix the package version fetching.
    3. Remove unnecessary build_proto.py.

Author: kunlin596

build_proto.py

@@ -1,7 +1,7 @@
 # Copyright 2021-2022 Toyota Research Institute. All rights reserved.
 import os
 
-__version__ = "1.6.0"
+__version__ = "2.0.1"
 
 DGP_PATH = os.getenv("DGP_PATH", default=os.getenv("HOME", os.getcwd()))
 DGP_DATA_DIR = os.path.join(DGP_PATH, ".dgp")

dgp/__init__.py

@@ -1,4 +1,5 @@
 # Copyright 2025 Toyota Research Institute. All rights reserved.
+import importlib.util
 import logging
 import os
 from pathlib import Path
@@ -10,10 +11,16 @@
 
 logger = logging.getLogger(__file__)
 
-__version__ = "2.0.0"
-
+_PACKAGE = "dgp"
 _ROOT_DIRPATH = Path(__file__).parent.absolute()
 
+_init_py = _ROOT_DIRPATH / _PACKAGE / "__init__.py"
+_spec = importlib.util.spec_from_file_location(_PACKAGE, _init_py)
+_module = importlib.util.module_from_spec(_spec)
+_spec.loader.exec_module(_module)
+
+__version__ = _module.__version__
+
 # Specify the dev version for development.
 _DEV_VERSION = str(os.environ.get("DGP_DEV_VERSION", ""))
 
@@ -30,7 +37,8 @@
 ]
 setup_requires = [
     "protobuf>=4.0.0,<5.0.0",
-    "grpcio-tools<1.66.0",  # for protobuf 4.X.X support.
+    "grpcio==1.62.2",  # for the latest protobuf 4.X.X support.
+    "grpcio-tools==1.62.2",  # for the latest protobuf 4.X.X support.
 ]
 
 
@@ -61,7 +69,7 @@ def run(self):
 packages = find_packages(exclude=["tests"])
 
 setup(
-    name="dgp",
+    name=_PACKAGE,
     version=_VERSION,
     description="Dataset Governance Policy (DGP) for Autonomous Vehicle ML datasets.",
     long_description=open("README.md", encoding="utf-8").read(),