# pip dependency resolution with backtracking (v20.3+) — Software interface version compatibility

For pip dependency resolution with backtracking (v20.3+), product is pip; software version is pip 20.3+; dependency version is dependency resolution, recorded from its source on 2026-08-04.

- **Product:** pip _(unconfirmed — we could not tie this to the quote below)_
- **Version pairing:** pip dependency resolution with backtracking (v20.3+) _(unconfirmed — we could not tie this to the quote below)_
- **Software version:** pip 20.3+ _(unconfirmed — we could not tie this to the quote below)_
- **Dependency version:** dependency resolution _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> dependency resolver is now capable of backtracking

## Source

- https://pip.pypa.io/en/stable/topics/dependency-resolution/

Last verified: 2026-08-04. Review by: 2026-10-03.
Part of [Software interface version compatibility](https://referencesource.org/software-interface-version-compatibility/).