[ARROW-9326] [Python] Setuptools 49.1.0 appears to break our Python 3.6 builds

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.0
• Component/s: Python
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/25412
• Assignee: Wes McKinney
• Reporter: Wes McKinney
• Created: 04/Jul/20 20:35
• Updated: 11/Jan/23 08:06
• Resolved: 09/Jul/20 12:38

Description

Not sure who thought it was a good idea to release setuptools on July 3, a holiday in the United States, but it appears to be breaking some of our builds

https://github.com/apache/arrow/pull/7539/checks?check_run_id=835994558

  File "/opt/conda/envs/arrow/lib/python3.6/site-packages/setuptools/command/egg_info.py", line 297, in run
    self.find_sources()
  File "/opt/conda/envs/arrow/lib/python3.6/site-packages/setuptools/command/egg_info.py", line 304, in find_sources
    mm.run()
  File "/opt/conda/envs/arrow/lib/python3.6/site-packages/setuptools/command/egg_info.py", line 535, in run
    self.add_defaults()
  File "/opt/conda/envs/arrow/lib/python3.6/site-packages/setuptools/command/egg_info.py", line 571, in add_defaults
    sdist.add_defaults(self)
  File "/opt/conda/envs/arrow/lib/python3.6/site-packages/setuptools/_distutils/command/sdist.py", line 228, in add_defaults
    self._add_defaults_ext()
  File "/opt/conda/envs/arrow/lib/python3.6/site-packages/setuptools/_distutils/command/sdist.py", line 312, in _add_defaults_ext
    self.filelist.extend(build_ext.get_source_files())
  File "/opt/conda/envs/arrow/lib/python3.6/distutils/command/build_ext.py", line 420, in get_source_files
    self.check_extensions_list(self.extensions)
  File "/opt/conda/envs/arrow/lib/python3.6/distutils/command/build_ext.py", line 362, in check_extensions_list
    "each element of 'ext_modules' option must be an "
distutils.errors.DistutilsSetupError: each element of 'ext_modules' option must be an Extension instance or 2-tuple

Issue Links

• links to: GitHub Pull Request #7636
• links to: GitHub Pull Request #7638
• links to: GitHub Pull Request #7683