astral-sh/uv

Changing a package name with sync --frozen reports the wrong error

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#12,661 opened on Apr 3, 2025

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 (5 comments) (1 reaction) (0 assignees)Rust (84,934 stars) (3,111 forks)batch import
error messageshelp wanted

Description

Summary

Changing the name of a package and using uv sync --frozen reports error: "Could not find root package $name". Removing --frozen resolves the issue.

Platform

Windows 11 x86_64

Version

0.6.12

Python version

3.12.8

Contributor guide

Tech stack
rustpython
Domain
cli
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Rust programmingUnderstanding of uv's sync command
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Investigate the error handling for ` frozen` in the `uv sync` command. The error `Could not find root package $name` suggests a lookup failure when the package name changes. Focus on the validation logic that runs when ` frozen` is enabled, likely in the resolution or lock file comparison code. Check for recent changes in the `crates/uv sync` directory and look for where the package name is compared or retrieved.