gleam-lang/gleam

Improve error message for a file being too large when publishing to Hex

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#5744 opened on May 23, 2026

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 (1 comment) (0 reactions) (0 assignees)Rust (21,417 stars) (960 forks)batch import
good first issuehelp wanted

Description

Similar to https://github.com/gleam-lang/gleam/issues/5708 which is for making api_revert_package_response error msg nicer

api_publish_package_response currently dumps the raw json eg

hexpm1

assuming https://github.com/gleam-lang/gleam/issues/5708 gets https://github.com/gleam-lang/gleam/pull/5728 and adds hexpm::ApiError::ValidationError that same type could be used for the api_publish_package_response case StatusCode::UNPROCESSABLE_ENTITY https://github.com/gleam-lang/gleam/blob/d09b84d289458b39caa304496a02e7412643bcf0/hexpm/src/lib.rs#L542

Contributor guide

Tech stack
rust
Domain
backendapi
Issue type
bug
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.
under 1 hour
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.
mostly clear
Prerequisites
Rust programminghexpm crate structure
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Look at hexpm/src/lib.rs around line 542, specifically the api publish package response function. The error message currently dumps raw JSON. Review PR #5728 which adds a ValidationError type for api revert package response. Use the same pattern to handle UNPROCESSABLE ENTITY status code and provide a user friendly error message.