# Install erlfmt with Homebrew

Automated code formatter for Erlang. Version 1.8.0 via Homebrew; verified from local package data.

## Install

```sh
sudo av install brew:erlfmt
```

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install erlfmt
```

  Evidence: local Homebrew formula metadata

## Package facts

- **Package key:** brew:erlfmt
- **Package manager:** Homebrew
- **Version:** 1.8.0
- **Source summary:** Automated code formatter for Erlang
- **Homepage:** <https://github.com/WhatsApp/erlfmt>
- **Repository:** <https://github.com/WhatsApp/erlfmt>
- **Generated:** 2026-08-03T19:37:03+00:00

## Executables

- erlfmt (alias)

## Install behavior

- Bottle: not available

## Freshness

- Page generated: 2026-08-03
- Package-manager version: 1.8.0
## Project history and usage

erlfmt is WhatsApp's opinionated Erlang code formatter, packaged as a CLI and rebar3 workflow for teams that want consistent Erlang formatting.

### Project history

The README describes erlfmt as an automated formatter that lets teams focus on code behavior rather than formatting debates. The project reached version 1.0.0 on June 29, 2021 and states that it is feature complete, with only backwards-compatible changes and bug fixes considered without serious review.

### Adoption history

erlfmt's main adoption path is as a rebar3 project plugin, adding a rebar3 fmt task and CI-friendly --check mode. The README also documents standalone escript use and editor integrations.

### How it is used

Users add erlfmt to project_plugins in rebar.config, run rebar3 fmt to format a project, or run the escript directly against Erlang source globs. Later releases kept pace with OTP language changes, including OTP 27 sigils and triple-quoted strings and OTP 28 comprehension features.

### Why package nerds care

For package managers, erlfmt is valuable because it is a deterministic formatter with a deliberate stability promise after 1.0. That makes it suitable for CI checks and repository-wide formatting without a constantly shifting style baseline.

### Timeline

- 2021-06-29: erlfmt 1.0.0 released.
- 2024-09-03: erlfmt 1.5.0 added OTP 27 feature support.
- 2025-06-13: erlfmt 1.7.0 added OTP 28 feature support.
- 2026-02-23: erlfmt 1.8.0 added more formatter enhancements and fixes.

### Related projects

- erlfmt integrates with rebar3 and requires Erlang/OTP.
- The README compares erlfmt with rebar3_format, steamroller, and erl_tidy.

### Sources

- <https://raw.githubusercontent.com/WhatsApp/erlfmt/main/README.md>
- <https://raw.githubusercontent.com/WhatsApp/erlfmt/main/CHANGELOG.md>
- <https://api.github.com/repos/WhatsApp/erlfmt/releases?per_page=10>
- <https://formulae.brew.sh/formula/erlfmt>


## Security Notes

narrow executable package without higher-risk signals.

- **Geiger risk:** green / low
- narrow executable package without higher-risk signals


## Configuration and credential file locations

These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.


## Configuration files

- Unix: PROJECT_ROOT/rebar.config

## Combined YAML source

View the package source record on GitHub. [combined/erlfmt.yml](https://github.com/mxcl/pkgdb/blob/main/combined/erlfmt.yml)


## Sources

- pkg.so package database
- Geiger risk classifier
- curated configuration and credential file locations
- curated package history
- pkgdb category and tag curation
- cross-ecosystem install command graph