# ERROR: Could not parse requirement: 'numpy @ git+https://github.com/numpy/numpy.git'

- **ID:** `python/pip-requirements-parse-error`
- **Domain:** python
- **Category:** install_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

Pip version may be too old to support PEP 508 URL requirements, or syntax is incorrect.

## Version Compatibility

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

## Workarounds

1. **Upgrade pip to latest version** (95% success)
   ```
   pip install --upgrade pip
pip install 'numpy @ git+https://github.com/numpy/numpy.git'
   ```
2. **Use git+https directly without @** (90% success)
   ```
   pip install git+https://github.com/numpy/numpy.git
   ```

## Dead Ends

- **Removing the @ symbol** — Changes requirement meaning; pip may try to install from PyPI instead. (80% fail)
- **Using --process-dependency-links (deprecated)** — This flag is removed in newer pip versions. (90% fail)