google-cloud-secret-manager is missing the module packaging #14820

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Summary of the issue

Context
I installed the package google-cloud-secret-manager with uv and imported it into my python script

Expected Behavior:
I expected the script to not throw any error

Actual Behavior:
I received the error: ModuleNotFoundError: No module named 'packaging'

API client name and version

google-cloud-secret-manager 2.25.0

Reproduction steps: code

file: main.py

from google.cloud.secretmanager import SecretManagerServiceClient

Reproduction steps: supporting files

No response

Reproduction steps: actual results

Run the file with python main.py and obtain this error:

Traceback (most recent call last):
  File "/Users/luca/dev/fourgreen/fg-workflows/src/secrets.py", line 1, in <module>
    from google.cloud.secretmanager import SecretManagerServiceClient
  File "/Users/luca/dev/fourgreen/fg-workflows/.venv/lib/python3.13/site-packages/google/cloud/secretmanager/__init__.py", line 21, in <module>
    from google.cloud.secretmanager_v1.services.secret_manager_service.async_client import (
        SecretManagerServiceAsyncClient,
    )
  File "/Users/luca/dev/fourgreen/fg-workflows/.venv/lib/python3.13/site-packages/google/cloud/secretmanager_v1/__init__.py", line 21, in <module>
    from .services.secret_manager_service import (
    ...<2 lines>...
    )
  File "/Users/luca/dev/fourgreen/fg-workflows/.venv/lib/python3.13/site-packages/google/cloud/secretmanager_v1/services/secret_manager_service/__init__.py", line 16, in <module>
    from .async_client import SecretManagerServiceAsyncClient
  File "/Users/luca/dev/fourgreen/fg-workflows/.venv/lib/python3.13/site-packages/google/cloud/secretmanager_v1/services/secret_manager_service/async_client.py", line 32, in <module>
    from google.api_core import exceptions as core_exceptions
  File "/Users/luca/dev/fourgreen/fg-workflows/.venv/lib/python3.13/site-packages/google/api_core/__init__.py", line 20, in <module>
    from google.api_core import _python_package_support
  File "/Users/luca/dev/fourgreen/fg-workflows/.venv/lib/python3.13/site-packages/google/api_core/_python_package_support.py", line 28, in <module>
    from packaging.version import parse as parse_version
ModuleNotFoundError: No module named 'packaging'

Reproduction steps: expected results

No response

OS & version + platform

Mac M1

Python environment

Python 3.13.9

Python dependencies

Package Version

alembic 1.17.0
annotated-doc 0.0.3
annotated-types 0.7.0
anyio 4.11.0
apprise 1.9.5
apscheduler 3.11.0
asyncpg 0.30.0
authlib 1.6.5
bcrypt 5.0.0
bidict 0.23.1
cachetools 6.2.1
certifi 2025.10.5
cffi 1.17.1
charset-normalizer 3.4.4
click 8.1.8
cryptography 44.0.2
fastapi 0.120.1
google-api-core 2.28.0
google-auth 2.41.1
google-cloud-secret-manager 2.25.0
googleapis-common-protos 1.71.0
grpc-google-iam-v1 0.14.3
grpcio 1.76.0
grpcio-status 1.76.0
h11 0.14.0
httpcore 1.0.8
httpx 0.28.1
idna 3.11
invoke 2.2.1
itsdangerous 2.2.0
jinja2 3.1.6
mako 1.3.10
markdown 3.9
markupsafe 3.0.3
numpy 2.3.4
oauthlib 3.3.1
pandas 2.3.3
paramiko 4.0.0
plombery 0.5.1
proto-plus 1.26.1
protobuf 6.33.0
pyasn1 0.6.1
pyasn1-modules 0.4.2
pycparser 2.22
pydantic 2.12.3
pydantic-core 2.41.4
pydantic-settings 2.11.0
pynacl 1.6.0
python-dateutil 2.9.0.post0
python-dotenv 1.2.1
python-engineio 4.12.3
python-gnupg 0.5.5
python-socketio 5.14.2
pytz 2025.2
pyyaml 6.0.3
requests 2.32.5
requests-oauthlib 2.0.0
rsa 4.9.1
simple-websocket 1.1.0
six 1.17.0
sniffio 1.3.1
sqlalchemy 2.0.44
starlette 0.49.0
typing-extensions 4.15.0
typing-inspection 0.4.2
tzdata 2025.2
tzlocal 5.3.1
urllib3 2.5.0
uvicorn 0.38.0
wsproto 1.2.0

Additional context

No response