Fix compatibility with setuptools ≥ 82 and PyTorch ≥ 2.6

[Copilot]

Two upstream breaking changes rendered the package non-functional: pkg_resources was removed from setuptools in v82, and PyTorch 2.6 flipped torch.load's weights_only default from False to True.

Changes

• pkg_resources → packaging.version (yolov5/utils/general.py, yolov5/utils/loggers/__init__.py)

  # Before
  import pkg_resources as pkg
  pkg.parse_version(x)
  
  # After
  from packaging.version import parse as parse_version
  parse_version(x)

  Added packaging>=21.0 to requirements.txt.

• torch.load weights_only — added weights_only=False to all 7 call sites across 5 files (models/experimental.py, train.py, hubconf.py, utils/general.py, segment/train.py). YOLOv5 checkpoints contain custom Python globals (models.yolo.Model) that are incompatible with weights_only=True.

  # Before
  ckpt = torch.load(weights, map_location='cpu')
  
  # After
  ckpt = torch.load(weights, map_location='cpu', weights_only=False)

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• dns.google
  • Triggering command: /usr/bin/python python -c import yolov5.utils.general (dns block)
  • Triggering command: /usr/bin/python python -m unittest (dns block)
  • Triggering command: /usr/bin/python python -m unittest tests.test_yolov5.TestYolov5FromUltralytics (dns block)
• https://api.github.com/repos/ultralytics/yolov5/releases/latest
  • Triggering command: /usr/bin/python python -m unittest (http block)
  • Triggering command: /usr/bin/python python -m unittest tests.test_yolov5.TestYolov5FromUltralytics (http block)
• https://api.github.com/repos/ultralytics/yolov5/releases/tags/v7.0
  • Triggering command: /usr/bin/python python -m unittest (http block)
  • Triggering command: /usr/bin/python python -m unittest tests.test_yolov5.TestYolov5FromUltralytics (http block)
• huggingface.co
  • Triggering command: /usr/bin/python python -m unittest (dns block)
• one.one.one.one
  • Triggering command: /usr/bin/python python -c import yolov5.utils.general (dns block)
  • Triggering command: /usr/bin/python python -m unittest (dns block)
  • Triggering command: /usr/bin/python python -m unittest tests.test_yolov5.TestYolov5FromUltralytics (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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