# 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 - **Package manager page:** - **Version:** 1.8.0 - **Source summary:** Automated code formatter for Erlang - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** Apache-2.0 - **Source archive:** - **Generated:** 2026-07-08T07:18:31+00:00 ## Executables - erlfmt (cli) - erlfmt (alias) ## Dependencies - erlang ## Build dependencies - rebar3 ## Install behavior - Post-install hook: not defined - Bottle: available on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux ## Freshness - Page generated: 2026-07-08 - Package-manager version: 1.8.0 - Local data: ok - Upstream repository: https://github.com/WhatsApp/erlfmt - Upstream latest detected: v1.8.0 (current) - info: No package-manager update timestamp was available. ## 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 - - - - ## 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 ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** erlfmt - **Version Scheme:** 0 - **Revision:** 0 - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** stable ## Related links - [Source-control packages](https://www.automicvault.com/pkg/source-control-tools/) - Belongs to a source-control command family. - [Terminal utility packages](https://www.automicvault.com/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Text processing packages](https://www.automicvault.com/pkg/text-processing-tools/) - Matched text, document, or structured-data processing metadata. - [Developer build packages](https://www.automicvault.com/pkg/developer-build-tools/) - Matched build, compiler, generator, or developer workflow metadata. - [erlang](https://www.automicvault.com/pkg/brew/erlang/) - Runtime dependency declared by Homebrew. - [rebar3](https://www.automicvault.com/pkg/brew/rebar3/) - Build dependency declared by Homebrew. - [black](https://www.automicvault.com/pkg/brew/black/) - Shares av.db curated category or tags: cli, code-style, developer-tools, formatter. - [cljfmt](https://www.automicvault.com/pkg/brew/cljfmt/) - Shares av.db curated category or tags: cli, code-style, developer-tools, formatter. - [gci](https://www.automicvault.com/pkg/brew/gci/) - Shares av.db curated category or tags: cli, code-style, developer-tools, formatter. - [gersemi](https://www.automicvault.com/pkg/brew/gersemi/) - Shares av.db curated category or tags: cli, code-style, developer-tools, formatter. - [gnu-indent](https://www.automicvault.com/pkg/brew/gnu-indent/) - Shares av.db curated category or tags: cli, code-style, developer-tools, formatter. - [gofumpt](https://www.automicvault.com/pkg/brew/gofumpt/) - Shares av.db curated category or tags: cli, code-style, developer-tools, formatter. - [ktfmt](https://www.automicvault.com/pkg/brew/ktfmt/) - Shares av.db curated category or tags: cli, code-style, developer-tools, formatter. - [scalariform](https://www.automicvault.com/pkg/brew/scalariform/) - Shares av.db curated category or tags: cli, code-style, developer-tools, formatter. - [snakefmt](https://www.automicvault.com/pkg/brew/snakefmt/) - Local package facts share a topical domain. Shared terms: cli, code, code-style, developer, developer-tools. ## Combined YAML source View the package source record on GitHub. [combined/erlfmt.yml](https://github.com/automic-vault/db/blob/main/combined/erlfmt.yml) ## Sources - Nucleus package database - Geiger risk classifier - package-page enrichment - curated configuration and credential file locations - curated package history - package version freshness - av.db category and tag curation - package relationship graph - cross-ecosystem install command graph