[BUG] setuptools 58.5 breaks installation of docutils==0.10.0

setuptools version

58.5.{0,1}

Python version

3.9

OS

Arch Linux

Additional environment information

No response

Description

Installing docutils==0.10 in a clean venv with setuptools 58.5.{0,1} fails with an internal(?) AttributeError.

Expected behavior

Successful installation.

How to Reproduce

python -mvenv /tmp/testenv && source /tmp/testenv/bin/activate &&
  pip install -U pip setuptools wheel && pip install docutils==0.10

(To repro the issue, you may need to pip cache purge first if you happen to already have a wheel for docutils==0.10 in your pip cache.)

Output

  ERROR: Command errored out with exit status 1:
   command: /tmp/testenv/bin/python -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-r8b4xqgi/docutils_459783958fce4136b27e3bc6ec961dba/setup.py'"'"'; __file__='"'"'/tmp/pip-install-r8b4xqgi/docutils_459783958fce4136b27e3bc6ec961dba/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-_qz_txff
       cwd: /tmp/pip-install-r8b4xqgi/docutils_459783958fce4136b27e3bc6ec961dba/
  Complete output (35 lines):
  running egg_info
  creating /tmp/pip-pip-egg-info-_qz_txff/docutils.egg-info
  writing /tmp/pip-pip-egg-info-_qz_txff/docutils.egg-info/PKG-INFO
  writing dependency_links to /tmp/pip-pip-egg-info-_qz_txff/docutils.egg-info/dependency_links.txt
  writing top-level names to /tmp/pip-pip-egg-info-_qz_txff/docutils.egg-info/top_level.txt
  writing manifest file '/tmp/pip-pip-egg-info-_qz_txff/docutils.egg-info/SOURCES.txt'
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
    File "/tmp/pip-install-r8b4xqgi/docutils_459783958fce4136b27e3bc6ec961dba/setup.py", line 221, in <module>
      do_setup()
    File "/tmp/pip-install-r8b4xqgi/docutils_459783958fce4136b27e3bc6ec961dba/setup.py", line 98, in do_setup
      dist = setup(**kwargs)
    File "/usr/lib/python3.9/distutils/core.py", line 148, in setup
      dist.run_commands()
    File "/usr/lib/python3.9/distutils/dist.py", line 966, in run_commands
      self.run_command(cmd)
    File "/usr/lib/python3.9/distutils/dist.py", line 985, in run_command
      cmd_obj.run()
    File "/tmp/testenv/lib/python3.9/site-packages/setuptools/command/egg_info.py", line 299, in run
      self.find_sources()
    File "/tmp/testenv/lib/python3.9/site-packages/setuptools/command/egg_info.py", line 306, in find_sources
      mm.run()
    File "/tmp/testenv/lib/python3.9/site-packages/setuptools/command/egg_info.py", line 541, in run
      self.add_defaults()
    File "/tmp/testenv/lib/python3.9/site-packages/setuptools/command/egg_info.py", line 578, in add_defaults
      sdist.add_defaults(self)
    File "/usr/lib/python3.9/distutils/command/sdist.py", line 226, in add_defaults
      self._add_defaults_python()
    File "/tmp/testenv/lib/python3.9/site-packages/setuptools/command/sdist.py", line 113, in _add_defaults_python
      self._add_data_files(self._safe_data_files(build_py))
    File "/tmp/testenv/lib/python3.9/site-packages/setuptools/command/egg_info.py", line 621, in _safe_data_files
      return build_py.get_data_files_without_manifest()
    File "/usr/lib/python3.9/distutils/cmd.py", line 103, in __getattr__
      raise AttributeError(attr)
  AttributeError: get_data_files_without_manifest
  ----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/66/40/2b11ec2ec96d527ef933332a5847cc90860fd8bbee46da2cc468794ea25b/docutils-0.10.tar.gz#sha256=370624e61b6773da2f2fb17cc2a4eaea4bb596c3585d13f75ff193c1c738603e (from https://pypi.org/simple/docutils/). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement docutils==0.10 (from versions: 0.3, 0.3.5, 0.3.7, 0.3.9, 0.4, 0.5, 0.6, 0.7, 0.8, 0.8.1, 0.9, 0.9.1, 0.10, 0.11, 0.12, 0.13.1, 0.14rc1, 0.14rc2, 0.14, 0.15, 0.15.1.post1, 0.15.2, 0.16b0.dev0, 0.16rc1, 0.16, 0.17b1, 0.17, 0.17.1b1.dev0, 0.17.1, 0.18b1, 0.18)
ERROR: No matching distribution found for docutils==0.10

Code of Conduct

• I agree to follow the PSF Code of Conduct

[abravalheri]

Guys, I submitted a PR with a fix for that, let’s see what the maintainers think.

However if anyone wants to contribute with other unit tests, that would be awesome! (so we prevent changes like this to break existing packages in the future)

Some people suggested trying to install entire packages directly, but I am afraid that would be a kind of integration test that needs more discussion. I also asked about this approach in the PR.

[jerryz1982]

breaks pycrypto too