# ERROR: Package 'foo' requires a different Python: 3.8.0 not in '>=3.9'

- **ID:** `python/setuptools-python-requires-mismatch`
- **Domain:** python
- **Category:** config_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

The package's python_requires metadata excludes the current Python version.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 3.8 | active | — | — |
| 3.9 | active | — | — |

## Workarounds

1. **Use a compatible Python version via pyenv or conda** (95% success)
   ```
   pyenv install 3.10 && pyenv local 3.10
   ```
2. **Find an older version of the package that supports your Python** (80% success)
   ```
   pip install 'foo<2.0'
   ```

## Dead Ends

- **Force installation with --ignore-requires-python** — May cause runtime errors due to incompatible APIs. (70% fail)
- **Downgrading pip** — Pip version doesn't change Python version. (20% fail)