rust-lang/rust-clippy

Move `excessive_nesting` to `pedantic`

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#14923 opened on May 30, 2025

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 (3 comments) (0 reactions) (1 assignee)Rust (10,406 stars) (1,391 forks)batch import
A-categorygood first issue

Description

This was originally put in complexity but with a useless value set as the config option.

I don't really see this as being beneficial anymore as other lints, such as too_many_lines, could do the same, but are completely fine in pedantic and are probably acted upon when using #![warn(clippy::pedantic). I think we should do the same with a value like 6, which seems in the same general ballpark as too_many_lines' 100.

Contributor guide

Tech stack
rust
Domain
tooling
Issue type
refactor
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.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
blocked
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
basic Rust knowledgefamiliarity with Clippy lint categoriesunderstanding of Clippy configuration
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
The issue requests moving the `excessive nesting` lint from the `complexity` category to `pedantic` with a default value of 6. The lint definition is in the Clippy source, likely under `clippy lints/src/`. The change involves updating the lint's category and default threshold. The issue is assigned to krikera, so any work should coordinate with them. Check the Clippy contributor guide for instructions on modifying lints.