# ERROR: Cannot import 'setuptools.build_meta' when build isolation is disabled because setuptools is not installed in the current environment.

- **ID:** `python/pip-build-isolation-conflict`
- **Domain:** python
- **Category:** install_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

Using `--no-build-isolation` requires the build backend (setuptools, wheel, etc.) to already be installed in the active environment.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 3.8 | active | — | — |
| 3.9 | active | — | — |
| 3.10 | active | — | — |
| 3.11 | active | — | — |
| 3.12 | active | — | — |

## Workarounds

1. **** (90% success)
   ```
   pip install --upgrade setuptools wheel && pip install --no-build-isolation <package>
   ```
2. **** (95% success)
   ```
   pip install <package>  # drop --no-build-isolation
   ```

## Dead Ends

- **** — pip is separate from the build backend; reinstalling it does not add setuptools. (90% fail)
- **** — The same missing backend error recurs deterministically. (95% fail)
- **** — Force-reinstall affects the target package, not build-time imports. (90% fail)