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pypa__setuptools-1129

This is a preserved training example. Membership in the current training wave has not been verified.
pypa/setuptools · Task 125 of 169

Problem statement

Transitive dependencies in setup_requires should be able to override system versions
This is basically the same issue as https://github.com/pypa/setuptools/issues/223 but for transitive dependencies.

### Issue:

When a package `my_pkg` depends (with `install_requires`) on `my_transitive_dep` with a version that conflict with the currently installed version of `my_transitive_dep`, adding `my_pkg` as a `setup_requires` to the `setup.py` of a project fails to initialise the Distribution object and raises `pkg_resources.VersionConflict`.

### Expected behaviour:

The proper version of `my_transitive_dep` is installed in `.eggs` and the currently installed version of `my_transitive_dep` is ignored.

### Minimal steps to reproduce the issue:

(in a virtualenv, python 2.7.13)

```
setuptools-versionconflict $ pip install 'setuptools<30'
Collecting setuptools<30
  Using cached https://pypi.apple.com/packages/06/4b/86a670fd21f7849adb092e40883c48dcd0d66b8a878fc8d63b7f0ea04213/setuptools-29.0.1-py2.py3-none-any.whl
Installing collected packages: setuptools
Successfully installed setuptools-29.0.1

setuptools-versionconflict $ cat setup.py
from setuptools import setup

setup(
    name='my-test',
    setup_requires=['flake8']  # flake8 has `setuptools>=30` in its `install_requires`
)

setuptools-versionconflict $ python setup.py clean
zip_safe flag not set; analyzing archive contents...

Installed /private/var/folders/cg/b7r4x8m15p59z4glfsy6s_640000gn/T/easy_install-q7dnDn/flake8-3.4.1/.eggs/pytest_runner-2.11.1-py2.7.egg
warning: no previously-included files matching '*.pyc' found anywhere in distribution
no previously-included directories found matching 'docs/build/'
zip_safe flag not set; analyzing archive contents...

Installed /Users/rchossart/tmp/setuptools-versionconflict/.eggs/flake8-3.4.1-py2.7.egg
Traceback (most recent call last):
  File "setup.py", line 5, in <module>
    setup_requires=['flake8']
  File "/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/core.py", line 111, in setup
    _setup_distribution = dist = klass(attrs)
  File "/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages/setuptools/dist.py", line 315, in __init__
    self.fetch_build_eggs(attrs['setup_requires'])
  File "/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages/setuptools/dist.py", line 361, in fetch_build_eggs
    replace_conflicting=True,
  File "/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages/pkg_resources/__init__.py", line 850, in resolve
    dist = best[req.key] = env.best_match(req, ws, installer)
  File "/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages/pkg_resources/__init__.py", line 1115, in best_match
    dist = working_set.find(req)
  File "/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages/pkg_resources/__init__.py", line 719, in find
    raise VersionConflict(dist, req)
pkg_resources.VersionConflict: (setuptools 29.0.1 (/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages), Requirement.parse('setuptools>=30'))
```

EDIT: clarified the problem definition.

Training membership

opd_e4b_pure_v6a opd_e4b_pure_v6b opd_e4b_pure_v7 opd_e4b_pure_v7b opd_e4b_self_audit_v4

Task issues extracted from preserved verified_rft_messages training examples. This is not a verified current RL wave manifest.

Task and snapshot provenance

Snapshot captured 2026-11-12T17:06:59.476467+00:00 · Autoresearch-Arena/gemma-4-developer-agent

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  "examples": 13,
  "instance_id": "pypa__setuptools-1129",
  "problem_statement": "Transitive dependencies in setup_requires should be able to override system versions\nThis is basically the same issue as https://github.com/pypa/setuptools/issues/223 but for transitive dependencies.\r\n\r\n### Issue:\r\n\r\nWhen a package `my_pkg` depends (with `install_requires`) on `my_transitive_dep` with a version that conflict with the currently installed version of `my_transitive_dep`, adding `my_pkg` as a `setup_requires` to the `setup.py` of a project fails to initialise the Distribution object and raises `pkg_resources.VersionConflict`.\r\n\r\n### Expected behaviour:\r\n\r\nThe proper version of `my_transitive_dep` is installed in `.eggs` and the currently installed version of `my_transitive_dep` is ignored.\r\n\r\n### Minimal steps to reproduce the issue:\r\n\r\n(in a virtualenv, python 2.7.13)\r\n\r\n```\r\nsetuptools-versionconflict $ pip install 'setuptools<30'\r\nCollecting setuptools<30\r\n  Using cached https://pypi.apple.com/packages/06/4b/86a670fd21f7849adb092e40883c48dcd0d66b8a878fc8d63b7f0ea04213/setuptools-29.0.1-py2.py3-none-any.whl\r\nInstalling collected packages: setuptools\r\nSuccessfully installed setuptools-29.0.1\r\n\r\nsetuptools-versionconflict $ cat setup.py\r\nfrom setuptools import setup\r\n\r\nsetup(\r\n    name='my-test',\r\n    setup_requires=['flake8']  # flake8 has `setuptools>=30` in its `install_requires`\r\n)\r\n\r\nsetuptools-versionconflict $ python setup.py clean\r\nzip_safe flag not set; analyzing archive contents...\r\n\r\nInstalled /private/var/folders/cg/b7r4x8m15p59z4glfsy6s_640000gn/T/easy_install-q7dnDn/flake8-3.4.1/.eggs/pytest_runner-2.11.1-py2.7.egg\r\nwarning: no previously-included files matching '*.pyc' found anywhere in distribution\r\nno previously-included directories found matching 'docs/build/'\r\nzip_safe flag not set; analyzing archive contents...\r\n\r\nInstalled /Users/rchossart/tmp/setuptools-versionconflict/.eggs/flake8-3.4.1-py2.7.egg\r\nTraceback (most recent call last):\r\n  File \"setup.py\", line 5, in <module>\r\n    setup_requires=['flake8']\r\n  File \"/usr/local/Cellar/python/2.7.13/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/core.py\", line 111, in setup\r\n    _setup_distribution = dist = klass(attrs)\r\n  File \"/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages/setuptools/dist.py\", line 315, in __init__\r\n    self.fetch_build_eggs(attrs['setup_requires'])\r\n  File \"/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages/setuptools/dist.py\", line 361, in fetch_build_eggs\r\n    replace_conflicting=True,\r\n  File \"/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages/pkg_resources/__init__.py\", line 850, in resolve\r\n    dist = best[req.key] = env.best_match(req, ws, installer)\r\n  File \"/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages/pkg_resources/__init__.py\", line 1115, in best_match\r\n    dist = working_set.find(req)\r\n  File \"/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages/pkg_resources/__init__.py\", line 719, in find\r\n    raise VersionConflict(dist, req)\r\npkg_resources.VersionConflict: (setuptools 29.0.1 (/Users/rchossart/tmp/setuptools-versionconflict/.venv/lib/python2.7/site-packages), Requirement.parse('setuptools>=30'))\r\n```\r\n\r\nEDIT: clarified the problem definition.",
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}
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  "membership": "archived training",
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  "name": "Preserved post-training task archive",
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