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Pip3: ImportError: cannot import name 'compatible_tags'...

See original GitHub issue

pip version: 20.0.2-1
Python version: 3.8.2
Operating system: ArchLinux

Running pip3 always fails and dumps an error:

Traceback (most recent call last):
  File "/usr/bin/pip3", line 11, in <module>
    load_entry_point('pip==20.0.2', 'console_scripts', 'pip3')()
  File "/usr/lib/python3.8/site-packages/pkg_resources/__init__.py", line 490, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python3.8/site-packages/pkg_resources/__init__.py", line 2862, in load_entry_point
    return ep.load()
  File "/usr/lib/python3.8/site-packages/pkg_resources/__init__.py", line 2453, in load
    return self.resolve()
  File "/usr/lib/python3.8/site-packages/pkg_resources/__init__.py", line 2459, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python3.8/site-packages/pip/_internal/cli/main.py", line 10, in <module>
    from pip._internal.cli.autocompletion import autocomplete
  File "/usr/lib/python3.8/site-packages/pip/_internal/cli/autocompletion.py", line 9, in <module>
    from pip._internal.cli.main_parser import create_main_parser
  File "/usr/lib/python3.8/site-packages/pip/_internal/cli/main_parser.py", line 7, in <module>
    from pip._internal.cli import cmdoptions
  File "/usr/lib/python3.8/site-packages/pip/_internal/cli/cmdoptions.py", line 28, in <module>
    from pip._internal.models.target_python import TargetPython
  File "/usr/lib/python3.8/site-packages/pip/_internal/models/target_python.py", line 3, in <module>
    from pip._internal.pep425tags import get_supported, version_info_to_nodot
  File "/usr/lib/python3.8/site-packages/pip/_internal/pep425tags.py", line 7, in <module>
    from pip._vendor.packaging.tags import (
ImportError: cannot import name 'compatible_tags' from 'pip._vendor.packaging.tags' (/usr/lib/python3.8/site-packages/packaging/tags.py)