Master CI failures

[Demonstrandum]

Motivation for features / changes

All master CI builds (CI, Wheel Prerelease, Nightly Release) were failing at the "Pip package test" step with ModuleNotFoundError: No module named 'pkg_resources'. This occurred because modern virtualenv and pip versions no longer pre-install setuptools in new virtual environments, and setuptools was not being pulled in as a dependency for the installed wheel. The PRs passed previously because the CI runner images had an older pip/virtualenv combination that still bundled setuptools.

Technical description of changes

This PR migrates away from pkg_resources by:

• Replacing pkg_resources.iter_entry_points() with importlib.metadata.entry_points() in tensorbored/default.py, including a version-aware helper to handle API differences between Python 3.9 and 3.10+.
• Replacing pkg_resources.parse_version() with packaging.version.Version() in tensorbored/data/server_ingester.py and tensorbored/version_test.py.
• Updating tensorbored/default_test.py to reflect the new entry point implementation.
• Removing setuptools from tensorbored/pip_package/requirements.txt.
• Updating Bazel BUILD files to remove expect_pkg_resources_installed and add expect_packaging_installed where necessary.

Screenshots of UI changes (or N/A)

N/A

Detailed steps to verify changes work correctly (as executed by you)

1. Identified ModuleNotFoundError: No module named 'pkg_resources' in CI logs for build (tf, 3.9) and build (notf, 3.9) at the "Pip package test" step.
2. Confirmed setuptools was not present in the pip freeze output during the failing CI step.
3. Replaced pkg_resources usages with importlib.metadata and packaging.version.
4. Implemented a version-aware helper for importlib.metadata.entry_points() to support Python 3.9 (dict-like return) and 3.10+ (direct group= kwarg).
5. Updated relevant test files and Bazel BUILD dependencies.
6. Removed setuptools from requirements.txt.
7. Ran black and flake8 to ensure linting compliance.
8. Verified packaging remains a dependency in requirements.txt.
9. The ultimate verification will be the passing of the CI builds for this PR.

Alternate designs / implementations considered (or N/A)

Considered the different behaviors of importlib.metadata.entry_points() across Python versions (3.9 vs 3.10+) and implemented a compatibility layer to ensure correct functionality. No other major alternate designs for replacing pkg_resources were considered, as importlib.metadata is the standard library replacement and packaging.version was already an existing dependency.

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Details

• Wheel: tensorbored_nightly-2.21.0a20260218-py3-none-any.whl
• Commit: d1f7e03
• Build status: success