Description

EliahKagan

opened on Feb 20, 2025

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The Cygwin CI test job is failing now, including when rerun at the tip of the main branch where it formerly passed. The failure occurs in the "Set up virtualenv" step, which runs python -m venv .venv. The log does not how a detailed error message, just:

Run python -m venv .venv
  python -m venv .venv
  echo 'BASH_ENV=.venv/bin/activate' >>"$GITHUB_ENV"
  shell: C:\tools\cygwin\bin\bash.exe --login --norc -eo pipefail -o igncr "{0}"
  env:
    CHERE_INVOKING: 1
    CYGWIN_NOWINPATH: 1
    CYGWIN: 
+ python -m venv .venv
Error: Command '['/cygdrive/d/a/GitPython/GitPython/.venv/bin/python', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.
Error: Process completed with exit code 1.

I first noticed this when checking the current status of #1988 (see #1988 (comment)), but it is not specific to that PR.

I do not know why this happens.

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1. Byron

   added

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   help wanted

   on Feb 21, 2025
2. Byron commented on Feb 21, 2025

   

   Byron

   on Feb 21, 2025

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   It is very puzzling indeed, and seemingly impossible to error out without any form of message.
3. EliahKagan

   added a commit that references this issue on Feb 21, 2025

   Undo other chages besides using the bootstrap script

   7fd5f15
4. EliahKagan commented on Feb 25, 2025

   

   EliahKagan

   on Feb 25, 2025

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   The absence of output is due to venv not showing the error in its output. In 4605dd6, I had venv not install pip but instead attempted to do so in a very similar way to how venv does, in a subsequent step. That produces this error:

   Traceback (most recent call last):
     File "/usr/lib/python3.9/runpy.py", line 188, in _run_module_as_main
       mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
     File "/usr/lib/python3.9/runpy.py", line 147, in _get_module_details
       return _get_module_details(pkg_main_name, error)
     File "/usr/lib/python3.9/runpy.py", line 111, in _get_module_details
       __import__(pkg_name)
     File "/usr/lib/python3.9/ensurepip/__init__.py", line [30](https://github.com/EliahKagan/GitPython/actions/runs/13454947366/job/37596811693#step:10:31), in <module>
       _SETUPTOOLS_VERSION = _get_most_recent_wheel_version("setuptools")
     File "/usr/lib/python3.9/ensurepip/__init__.py", line 27, in _get_most_recent_wheel_version
       return str(max(_wheels[pkg], key=distutils.version.LooseVersion))
   ValueError: max() arg is an empty sequence
   

   I haven't found a good way to fix this entirely, but in #2007 I have worked around it by having the Cygwin CI job install pip in the virtual environment using the bootstrap script, which fixes the problem that kept tests from running, but does not fix the problem for test_installation where it also separately occurs.
5. Byron

   added a commit that references this issue on Feb 25, 2025

   Merge pull request #2007 from EliahKagan/cygwin-py39-venv

   fe7533e
6. EliahKagan

   added 4 commits that reference this issue on Mar 6, 2025

   Use python39-pip-wheel Cygwin package on CI

   782e998

   Use python39-pip-wheel Cygwin package on CI

   83e8c5d

   Use python39-pip-wheel Cygwin package on CI

   96da238

   Mark `test_installation` xfail on Cygwin CI

   2ae697d
7. Byron

   closed this as completedin #2009on Mar 12, 2025
8. EliahKagan

   added 2 commits that reference this issue on Jun 14, 2025

   Use *-wheel packages as a better fix for gitpython-developers#2004

   f2b3dd1

   Use *-wheel packages as a better fix for gitpython-developers#2004

   8e24edf
9. EliahKagan commented on Jun 14, 2025

   

   EliahKagan

   on Jun 14, 2025

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   #2053 fixes this properly (at least with Python 3.9, which is all we test on Cygwin currently).

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