`uvx` complains about non-existent `--with`

Description

❯ uvx --from ./python/ruff-ecosystem ruff-ecosystem --output-format markdown --force-preview --cache ../ecosystem format ./target/release/ruff ./target/debug/ruff > changes.md
  × Invalid `--with` requirement
  ╰─▶ Distribution not found at: file:///home/astral/ruff/python/python/ruff-ecosystem

Contributor guide

Tech stack

rust

Domain

clideveloper experience

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

RustCLI parsing (clap)uv codebase structure

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

35

Research direction

Investigate how `uvx` distinguishes between the ` from` and ` with` flags. The error suggests that the argument following ` from` is being interpreted as a ` with` requirement. Examine the clap argument definitions in the uvx source code, likely in `crates/uv cli/src/lib.rs` or similar. Check if there is a conflict in how positional arguments or optional flags are parsed. The fix should ensure that ` from` correctly consumes its value and does not fall through to ` with`.