macOS
Homebrewverified · 100%
brew install yamlfixlocal Homebrew formula metadata
brew / rank 2899
Install yamlfix with Homebrew, Nix
Simple and configurable YAML formatter that keeps comments. Version 1.19.1 via Homebrew; verified 2026-07-13. Also installable with nix: nix profile install nixpkgs#yamlfix.
install
Additional install commands
Linux
Nixverified · 92%
nix profile install nixpkgs#yamlfixnixpkgs package indexes · pkgs/by-name/ya/yamlfix/package.nix · source: api.github.com
overview
Package summary
Simple and configurable YAML formatter that keeps comments
Project links
Commands and aliases
- yamlfix
history
Project history and usage
yamlfix is a Python YAML formatter focused on applying a consistent style while preserving comments. It is both a command-line tool and a library, aimed at making YAML files more regular without stripping the human annotations that configuration files often rely on.
Project history
The repository was created on 2020-11-24. The README and documentation describe yamlfix as an opinionated formatter that keeps comments, fixes indentation, adds or removes document starts, normalizes truthy values, adjusts line endings and whitespace, and respects Jinja2 syntax.
The official references section explains the project in relation to an earlier yamlfmt project: yamlfix was created as a new formatter because its author wanted stronger tests, CI, and documentation. It builds on ruyaml for YAML parsing/round-tripping, Click for the CLI, and maison for configuration discovery.
Adoption history
yamlfix grew in the Python tooling lane rather than the Go single-binary lane. Its docs start with `pip install yamlfix`, but the supplied package data also shows packaging in Homebrew and Nix, making it available to users who curate YAML-heavy repositories from system package managers.
The project is especially relevant where YAML is hand-edited, reviewed, and linted: repository metadata, GitHub Actions, Docker Compose, Kubernetes-adjacent files, and documentation examples. Its promise to keep comments addresses a practical blocker for formatter adoption in configuration files.
How it is used
The documented CLI accepts files or directories: `yamlfix file.yaml file2.yml` for individual files and `yamlfix .` for recursive formatting. The library API exposes `fix_files` and `fix_code` for embedding the formatter in Python code.
Configuration is loaded from `pyproject.toml`, `.yamlfix.toml`, or `yamlfix.toml`, with optional custom TOML files via `-c` or `--config-file` and environment variable overrides using the `YAMLFIX_` prefix.
Why package nerds care
yamlfix matters because YAML formatting is harder than it looks: comments, quotes, null spellings, truthy strings, flow versus block sequences, Jinja snippets, and line wrapping all affect whether a formatter is trusted in real repos.
In a package catalog, yamlfix sits next to linters and formatters as the Python/comment-preserving answer to the recurring question: can this YAML be autoformatted without losing the parts humans care about?
Timeline
- 2020-11-24: GitHub repository created.
- 2020s: Documentation framed yamlfix as a comment-preserving alternative inspired by yamlfmt.
- 2020s: Configuration support settled around pyproject.toml, .yamlfix.toml, yamlfix.toml, custom TOML files, and YAMLFIX_ environment variables.
Related projects
- The official references name mmlb/yamlfmt, ruyaml, Click, maison, pytest, mypy, Flakeheaven, Black, Autoimport, isort, PDM, MkDocs, Safety, and Bandit.
Sources
security posture
Risk level: green
narrow executable package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- narrow executable package without higher-risk signals
Signals
- metadata:no-higher-risk-signals
Install behavior
- No Homebrew bottle metadata was recorded.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
local files
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
Config paths the tool may read or write during local use.
- Unix
pyproject.toml.yamlfix.tomlyamlfix.toml
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
yamlfix | executable | indexed executable | Discovered from the local executable index. |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-08-03
manager version1.19.1
manager updated2026-07-13
local dataunknown
upstreamnot available
latest detectednot detected
- okNo freshness warnings were generated.
install metadata
Package metadata
| Package key | brew:yamlfix |
|---|---|
| Version | 1.19.1 |
| Package manager | Homebrew |
| Homepage | https://lyz-code.github.io/yamlfix/ |
| Last updated | 2026-07-13T11:46:06Z |
| Pulse | updated |
| Bottle | not recorded |
| Service | none declared |
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
Nix95%
yamlfix
nix profile install nixpkgs#yamlfix- normalized package name match
- Matched by: Yamlfix
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- cross-ecosystem install command graph
- curated configuration and credential file locations
- curated package history
- external package-manager database matches
- pkg.so package database
- pkgdb category and tag curation