astral-sh/uv

Allow `--isolated` with script execution

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#15,919 opened on Sep 17, 2025

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 (2 comments) (0 reactions) (0 assignees)Rust (3,111 forks)batch import
enhancementgood first issue

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Description

Right now, we ignore the flag and display a warning

❯ uv run --isolated --script example.py
warning: `--isolated` is a no-op for Python scripts with inline metadata, which always run in isolation

but now that we changed scripts to use a stable path, we should allow --isolated to opt-out of that, e.g., for people in situations like https://github.com/astral-sh/uv/issues/15918

Contributor guide

Research direction
Examine how ` isolated` is currently handled in script execution, particularly in the CLI argument parsing and the script runner. Identify where the flag is ignored and the warning is emitted, then modify the logic to respect ` isolated` by opting out of using the stable path.
Tech stack
rustpython
Domain
clitooling
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
RustGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60