[BUG] Install fails with `use_2to3 is invalid` error

[mattclay]

setuptools version

67.7.0

Python version

3.8

OS

Ubuntu 22.04.2 LTS

Additional environment information

Use of pip 23.1 is required for the reproducer given, since it relies on --no-binary attempting to build a wheel.
Additionally, wheel should not be installed for the reproducer to work.

The changes in #3849 seem related.

Description

Installation of coverage version 4.5.4 fails with setuptools version 67.7.0, but works with 67.6.1.

As a work-around, I can use the previous version of setuptools:

$ cat constraints.txt
setuptools==67.6.1
$ PIP_CONSTRAINT=./constraints.txt pip install coverage==4.5.4 --no-binary :all: --no-cache
Collecting coverage==4.5.4
  Downloading coverage-4.5.4.tar.gz (385 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 385.2/385.2 kB 1.5 MB/s eta 0:00:00
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Building wheels for collected packages: coverage
  Building wheel for coverage (pyproject.toml) ... done
  Created wheel for coverage: filename=coverage-4.5.4-cp38-cp38-linux_x86_64.whl size=208278 sha256=73953647437bb81efefbaae00f779c00e8051e83d2ec0dba760e465e1793cc91
  Stored in directory: /tmp/pip-ephem-wheel-cache-pnyp3zi8/wheels/e7/0e/3f/4d16d7576f1070cf1a0028b1664aff2cc8e84c9c0e2b8f3207
Successfully built coverage
Installing collected packages: coverage
Successfully installed coverage-4.5.4

Expected behavior

$ pip install coverage==4.5.4 --no-binary :all: --no-cache
Collecting coverage==4.5.4
  Downloading coverage-4.5.4.tar.gz (385 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 385.2/385.2 kB 1.5 MB/s eta 0:00:00
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Building wheels for collected packages: coverage
  Building wheel for coverage (pyproject.toml) ... done
  Created wheel for coverage: filename=coverage-4.5.4-cp38-cp38-linux_x86_64.whl size=208278 sha256=73953647437bb81efefbaae00f779c00e8051e83d2ec0dba760e465e1793cc91
  Stored in directory: /tmp/pip-ephem-wheel-cache-pnyp3zi8/wheels/e7/0e/3f/4d16d7576f1070cf1a0028b1664aff2cc8e84c9c0e2b8f3207
Successfully built coverage
Installing collected packages: coverage
Successfully installed coverage-4.5.4

How to Reproduce

pip install coverage==4.5.4 --no-binary :all: --no-cache

Output

$ pip install coverage==4.5.4 --no-binary :all: --no-cache
Collecting coverage==4.5.4
  Downloading coverage-4.5.4.tar.gz (385 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 385.2/385.2 kB 1.6 MB/s eta 0:00:00
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  error: subprocess-exited-with-error
  
  × Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [17 lines of output]
      /tmp/pip-build-env-6bs8y2ax/overlay/lib/python3.8/site-packages/setuptools/config/setupcfg.py:293: _DeprecatedConfig: Deprecated config in `setup.cfg`
      !!
      
              ********************************************************************************
              The license_file parameter is deprecated, use license_files instead.
      
              By 2023-Oct-30, you need to update your project and remove deprecated calls
              or your builds will no longer be supported.
      
              See https://setuptools.pypa.io/en/latest/https://setuptools.pypa.io/en/latest/userguide/declarative_config.html for details.
              ********************************************************************************
      
      !!
        parsed = self.parsers.get(option_name, lambda x: x)(value)
      /tmp/pip-build-env-6bs8y2ax/overlay/lib/python3.8/site-packages/setuptools/dist.py:954: DistDeprecationWarning: use_2to3 is ignored.
        ep.load()(self, ep.name, value)
      error in coverage setup command: use_2to3 is invalid.
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× Getting requirements to build wheel did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.

[mattclay]

I updated the issue summary to mention using pip 23.1, since the reproducer relies on the new --no-binary behavior.

[mattclay]

Also, wheel should not be installed for the reproducer to work.

[webknjaz]

Also, wheel should not be installed for the reproducer to work.

I don't think its presence matters if PEP 517 is used.
Though, if it's not used, we're probably hitting a direct setup.py install invocation...

[JamMarHer]

Related #3899

[abravalheri]

Thank you very much.