astral-sh/uv

Add `uv run --watch script.py` command to rerun `uv run` on `.py` file changes

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#9,652 opened on Dec 5, 2024

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 (14 comments) (33 reactions) (0 assignees)Rust (84,934 stars) (3,111 forks)batch import
enhancementhelp wanted

Description

Essentially Bun watch mode but with uv.

Some more context for this on Discord.

Contributor guide

Tech stack
rustpython
Domain
clideveloper experience
Issue type
feature
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.
1-2 days
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.
mostly clear
Prerequisites
Rust programmingfile system watchersasync programming
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate existing file watching crates like `notify` in Rust. Consider how to integrate a watcher into `uv run` to rerun on `.py` changes, similar to Bun's watch mode. Review the Discord discussion for additional context and possible design preferences. Look at the current `uv run` implementation in the repository.