fix using CPU torch with UV

[Borda]

What does this PR do?

it shall unblock tests with py3.9

ImportError while loading conftest '/home/runner/work/pytorch-lightning/pytorch-lightning/tests/tests_pytorch/conftest.py'. conftest.py:25: in <module> import torch.distributed ../../.venv/lib/python3.9/site-packages/torch/__init__.py:1332: in <module> _C._initExtension(manager_path()) ../../.venv/lib/python3.9/site-packages/torch/cuda/__init__.py:51: in <module> import pynvml # type: ignore[import] ../../.venv/lib/python3.9/site-packages/_pynvml_redirector.py:29: in find_spec warnings.warn(PYNVML_MSG, FutureWarning, stacklevel=2) E FutureWarning: The pynvml package is deprecated. Please install nvidia-ml-py instead. If you did not install pynvml directly, please report this to the maintainers of the package that installed pynvml for you. /home/runner/work/pytorch-lightning/pytorch-lightning/.venv/lib/python3.9/site-packages/coverage/inorout.py:521: CoverageWarning: Module pytorch_lightning was never imported. (module-not-imported) self.warn(f"Module {pkg} was never imported.", slug="module-not-imported") /home/runner/work/pytorch-lightning/pytorch-lightning/.venv/lib/python3.9/site-packages/coverage/control.py:945: CoverageWarning: No data was collected. (no-data-collected) self._warn("No data was collected.", slug="no-data-collected") 

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---

📚 Documentation preview 📚: https://pytorch-lightning--21181.org.readthedocs.build/en/21181/

[github-actions]

⚡ Required checks status: All passing 🟢

Groups summary

🟢 pytorch_lightning: Tests workflow

Check ID	Status
pl-cpu-guardian	success	✅

These checks are required after the changes to .github/workflows/ci-tests-pytorch.yml, pyproject.toml.

🟢 pytorch_lightning: Azure GPU

Check ID	Status
pytorch-lightning (GPUs) (testing Lightning | latest)	success	✅
pytorch-lightning (GPUs) (testing PyTorch | oldest)	success	✅
pytorch-lightning (GPUs) (testing PyTorch | latest)	success	✅

These checks are required after the changes to pyproject.toml.

🟢 fabric: Docs

Check ID	Status
docs-make (fabric, doctest)	success	✅
docs-make (fabric, html)	success	✅

These checks are required after the changes to pyproject.toml.

🟢 pytorch_lightning: Docs

Check ID	Status
docs-make (pytorch, doctest)	success	✅
docs-make (pytorch, html)	success	✅

These checks are required after the changes to pyproject.toml.

🟢 lightning_fabric: CPU workflow

Check ID	Status
fabric-cpu-guardian	success	✅

These checks are required after the changes to pyproject.toml, .github/workflows/ci-tests-fabric.yml.

🟢 lightning_fabric: Azure GPU

Check ID	Status
lightning-fabric (GPUs) (testing Fabric | oldest)	success	✅
lightning-fabric (GPUs) (testing Fabric | latest)	success	✅
lightning-fabric (GPUs) (testing Lightning | latest)	success	✅

These checks are required after the changes to pyproject.toml.

🟢 mypy

Check ID	Status
mypy	success	✅

These checks are required after the changes to pyproject.toml.

---

Thank you for your contribution! 💜

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87%. Comparing base (33d748d) to head (cb22192).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@ Coverage Diff @@ ## master #21181 +/- ## ======================================= Coverage 87% 87% ======================================= Files 269 269 Lines 23656 23656 ======================================= Hits 20633 20633 Misses 3023 3023