Fix remaining uses of deprecated cmp argument in attrs decorators

Description

Contributor guide

Tech stack

python

Domain

backend

Issue type

refactor

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.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

clear

Prerequisites

Basic PythonUnderstanding of attrs decorators

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

85

Research direction

The issue lists four files in the Synapse repository where the deprecated `cmp` argument is used in `attr.s`. The fix involves replacing `cmp` with `eq` and `order` as recommended by the attrs library. Contributors should refer to the attrs documentation for the correct usage. No linked PRs or additional context in comments.