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brew

Install libfyaml with Homebrew, apk, apt, dnf, MacPorts, Nix, pacman, zypper

Fully feature complete YAML parser and emitter. Version 0.9.6 via Homebrew; verified 2026-06-20.

Install commandSecurity notes

install

Additional install commands

macOS

Homebrewverified · 100%
brew install libfyaml

local Homebrew formula metadata

MacPortsverified · 94%
sudo port install libfyaml

MacPorts ports tree · devel/libfyaml/Portfile · source: api.github.com

Linux

Alpine Linux apkverified · 92%
sudo apk add libfyaml

Alpine Linux edge package indexes · libfyaml · source: dl-cdn.alpinelinux.org

Debian aptverified · 92%
sudo apt install libfyaml-dev

Debian stable package indexes · libfyaml-dev · source: deb.debian.org

Fedora dnfverified · 92%
sudo dnf install fyaml-utils

Fedora Rawhide package metadata · fyaml-utils · source: dl.fedoraproject.org

Nixverified · 92%
nix profile install nixpkgs#libfyaml

nixpkgs package indexes · pkgs/by-name/li/libfyaml/package.nix · source: api.github.com

Arch Linux pacmanverified · 92%
sudo pacman -S libfyaml

Arch Linux sync databases · libfyaml · source: geo.mirror.pkgbuild.com

openSUSE zypperverified · 92%
sudo zypper install libfyaml-devel

openSUSE Tumbleweed package metadata · libfyaml-devel · source: download.opensuse.org

overview

Package summary

Fully feature complete YAML parser and emitter

Commands and aliases

  • fy-compose
  • fy-dump
  • fy-filter
  • fy-join
  • fy-testsuite
  • fy-tool
  • fy-ypath

history

Project history and usage

libfyaml is Pantelis Antoniou’s MIT-licensed C library and tool suite for YAML 1.2 and JSON parsing and emitting, emphasizing zero-copy parsing, document and event APIs, diagnostics, and YAML test-suite coverage.

Project history

GitHub repository metadata records pantoniou/libfyaml creation on 2019-09-16, and the project documentation copyright spans 2019-2026. The README describes the library as a high-performance YAML 1.2 and JSON parser/emitter with zero-copy operation, full document and event APIs, and no artificial key or document size limits.

GitHub release metadata records v0.9 on 2023-09-25, v0.9.6 on 2026-03-15, and a 1.0.0-alpha series beginning on 2026-03-16. The alpha series added generics, reflection/meta-type support, Python binding work, parse caching, optimized generic emission, and wider binary packaging.

Adoption history

libfyaml’s adoption is narrower than older C YAML libraries, but package records in the input show it in Homebrew, Debian, Ubuntu, Fedora, Arch, MacPorts, Nix, Alpine, and openSUSE. It appeals to projects that need a modern C YAML parser with event, document-tree, path, JSON, and command-line tooling in one package.

How it is used

The package ships utilities such as fy-tool, fy-dump, fy-compose, fy-filter, fy-join, fy-ypath, and fy-testsuite. Developers can link it through CMake or pkg-config and use core, generic, or reflection APIs depending on whether they need streaming events, document manipulation, schema-light values, or typed C structure serialization.

Why package nerds care

libfyaml matters to package maintainers because YAML parsing is deceptively hard, security-sensitive, and specification-heavy. A compact C implementation with test-suite emphasis, JSON interop, command-line tools, and optional Python bindings gives distributions another choice besides older libyaml-style stacks.

Timeline

  • 2019-09-16: GitHub repository metadata records creation of pantoniou/libfyaml.
  • 2023-09-25: GitHub release metadata records v0.9.
  • 2026-03-15: GitHub release metadata records v0.9.6.
  • 2026-03-16: GitHub release metadata records v1.0.0-alpha1.
  • 2026-05-28: GitHub release metadata records v1.0.0-alpha7.

Related projects

  • The YAML test suite is part of libfyaml’s correctness story.
  • The Python binding in python-libfyaml bridges the C generic runtime into Python workflows.
  • libyaml is the older C YAML library against which newer C YAML parsers are often compared.

security posture

Risk level: green

library-like package without higher-risk signals.

Risk classifier

green risk · low confidence · appliance

Why

  • library-like package without higher-risk signals

Signals

  • metadata:library-like

Install behavior

  • No Homebrew post-install hook is recorded in formula metadata.
  • Homebrew bottle metadata is available for 6 platform targets.
  • Build metadata lists 1 build dependencies.

Recommended review

Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.

executables

Installed executables

CommandKindExposureNote
fy-composecliglobal executable
fy-dumpcliglobal executable
fy-filtercliglobal executable
fy-joincliglobal executable
fy-testsuitecliglobal executable
fy-toolcliglobal executable
fy-ypathcliglobal executable

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 generated2026-07-08
manager version0.9.6
manager updated2026-06-20
local dataok
upstreamnot checked
latest detectednot detected

https://github.com/pantoniou/libfyaml

install metadata

Package metadata

Package keybrew:libfyaml
Version0.9.6
Package managerHomebrew
Package manager pagehttps://formulae.brew.sh/formula/libfyaml
Homepagehttps://github.com/pantoniou/libfyaml
Repositoryhttps://github.com/pantoniou/libfyaml
Upstream docshttps://pantoniou.github.io/libfyaml
LicenseMIT
Source archivehttps://github.com/pantoniou/libfyaml/releases/download/v0.9.6/libfyaml-0.9.6.tar.gz
Last updated2026-06-20T02:53:10Z
Pulseupdated
Build dependenciescmake
Bottleavailable (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-installnot defined
Servicenone declared

registry facts

Source database details

Source DatabaseHomebrew formula API
Taphomebrew/core
Full Namelibfyaml
Version Scheme0
Revision0
Bottle Stable Root URLhttps://ghcr.io/v2/homebrew/core
Deprecatedno
Disabledno
Keg Onlyno
URL Keys
  • stable

source database matches

Other package-manager records

Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.

Debian apt95%

libfyaml-dev 0.8-1+b2

Fully feature complete YAML parser and emitter (headers)

https://github.com/pantoniou/libfyaml

sudo apt install libfyaml-dev
  • Section: libdevel
  • Architecture: amd64
  • Source Package: libfyaml
  • 1 dependencies
  • normalized package name match
  • Matched by: Libfyaml
Debian stable package indexes · deb.debian.org · Debian stable package indexes: libfyaml-dev from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
Debian apt95%

libfyaml-utils 0.8-1+b2

Fully feature complete YAML parser and emitter (CLI tools)

https://github.com/pantoniou/libfyaml

sudo apt install libfyaml-utils
  • Section: devel
  • Architecture: amd64
  • Source Package: libfyaml
  • 2 dependencies
  • normalized package name match
  • Matched by: Libfyaml
Debian stable package indexes · deb.debian.org · Debian stable package indexes: libfyaml-utils from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
Debian apt95%

libfyaml0 0.8-1+b2

Fully feature complete YAML parser and emitter (library)

https://github.com/pantoniou/libfyaml

sudo apt install libfyaml0
  • Section: libs
  • Architecture: amd64
  • Source Package: libfyaml
  • 1 dependencies
  • normalized package name match
  • Matched by: Libfyaml
Debian stable package indexes · deb.debian.org · Debian stable package indexes: libfyaml0 from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
Nix95%

libfyaml

nix profile install nixpkgs#libfyaml
  • normalized package name match
  • Matched by: Libfyaml
nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/li/libfyaml/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
Ubuntu apt95%

libfyaml-dev 0.8-1build1

Fully feature complete YAML parser and emitter (headers)

https://github.com/pantoniou/libfyaml

sudo apt install libfyaml-dev
  • Section: universe/libdevel
  • Architecture: amd64
  • Source Package: libfyaml
  • 1 dependencies
  • normalized package name match
  • Matched by: Libfyaml
Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: libfyaml-dev from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz
Ubuntu apt95%

libfyaml-utils 0.8-1build1

Fully feature complete YAML parser and emitter (CLI tools)

https://github.com/pantoniou/libfyaml

sudo apt install libfyaml-utils
  • Section: universe/devel
  • Architecture: amd64
  • Source Package: libfyaml
  • 2 dependencies
  • normalized package name match
  • Matched by: Libfyaml
Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: libfyaml-utils from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz
Ubuntu apt95%

libfyaml0 0.8-1build1

Fully feature complete YAML parser and emitter (library)

https://github.com/pantoniou/libfyaml

sudo apt install libfyaml0
  • Section: universe/libs
  • Architecture: amd64
  • Source Package: libfyaml
  • 1 dependencies
  • normalized package name match
  • Matched by: Libfyaml
Ubuntu 24.04 LTS package indexes · archive.ubuntu.com · Ubuntu 24.04 LTS package indexes: libfyaml0 from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz
apk95%

libfyaml 0.9.5-r1

Fully feature complete YAML parser and emitter

https://github.com/pantoniou/libfyaml

sudo apk add libfyaml
  • License: MIT
  • Architecture: x86_64
  • Source Package: libfyaml
  • 1 dependencies
  • 1 provides
  • normalized package name match
  • Matched by: Libfyaml
Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: libfyaml from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz
apk95%

libfyaml-dev 0.9.5-r1

Fully feature complete YAML parser and emitter (development files)

https://github.com/pantoniou/libfyaml

sudo apk add libfyaml-dev
  • License: MIT
  • Architecture: x86_64
  • Source Package: libfyaml
  • 1 dependencies
  • 1 provides
  • normalized package name match
  • Matched by: Libfyaml
Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: libfyaml-dev from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz
apk95%

libfyaml-doc 0.9.5-r1

Fully feature complete YAML parser and emitter (documentation)

https://github.com/pantoniou/libfyaml

sudo apk add libfyaml-doc
  • License: MIT
  • Architecture: x86_64
  • Source Package: libfyaml
  • normalized package name match
  • Matched by: Libfyaml
Alpine Linux edge package indexes · dl-cdn.alpinelinux.org · Alpine Linux edge package indexes: libfyaml-doc from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz
dnf95%

fyaml-utils 0.8-9.fc44

Utility tools for libfyaml

https://github.com/pantoniou/libfyaml

sudo dnf install fyaml-utils
  • License: MIT and GPL-2.0-only and BSD-2-Clause
  • Category: Unspecified
  • Architecture: x86_64
  • Source Package: libfyaml
  • 4 dependencies
  • 1 provides
  • normalized package name match
  • Matched by: Libfyaml
Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: fyaml-utils from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst
dnf95%

libfyaml 0.8-9.fc44

Complete YAML parser and emitter

https://github.com/pantoniou/libfyaml

sudo dnf install libfyaml
  • License: MIT and GPL-2.0-only and BSD-2-Clause
  • Category: Unspecified
  • Architecture: i686
  • Source Package: libfyaml
  • 2 dependencies
  • 3 provides
  • normalized package name match
  • Matched by: Libfyaml
Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: libfyaml from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst
dnf95%

libfyaml-devel 0.8-9.fc44

Complete YAML parser and emitter

https://github.com/pantoniou/libfyaml

sudo dnf install libfyaml-devel
  • License: MIT and GPL-2.0-only and BSD-2-Clause
  • Category: Unspecified
  • Architecture: i686
  • Source Package: libfyaml
  • 3 dependencies
  • 2 provides
  • normalized package name match
  • Matched by: Libfyaml
Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: libfyaml-devel from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst
pacman95%

libfyaml 0.9.6-2

Fully feature complete YAML parser and emitter

https://pantoniou.github.io/libfyaml/

sudo pacman -S libfyaml
  • License: MIT
  • Architecture: x86_64
  • 1 dependencies
  • normalized package name match
  • Matched by: Libfyaml
Arch Linux sync databases · geo.mirror.pkgbuild.com · Arch Linux sync databases: libfyaml from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz
zypper95%

libfyaml-devel 0.9.5-1.2

Development files for libfyaml

https://github.com/pantoniou/libfyaml

sudo zypper install libfyaml-devel
  • License: MIT
  • Category: Unspecified
  • Architecture: x86_64
  • Source Package: libfyaml
  • 2 dependencies
  • 2 provides
  • normalized package name match
  • Matched by: Libfyaml
openSUSE Tumbleweed package metadata · download.opensuse.org · openSUSE Tumbleweed package metadata: libfyaml-devel from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst
zypper95%

libfyaml-fy-tool 0.9.5-1.2

Command line tools for libfyaml

https://github.com/pantoniou/libfyaml

sudo zypper install libfyaml-fy-tool
  • License: MIT
  • Category: Unspecified
  • Architecture: x86_64
  • Source Package: libfyaml
  • 3 dependencies
  • 2 provides
  • normalized package name match
  • Matched by: Libfyaml
openSUSE Tumbleweed package metadata · download.opensuse.org · openSUSE Tumbleweed package metadata: libfyaml-fy-tool from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

Related tools

  • cmakeBuild dependency declared by Homebrew.
  • appstreamPopular package that depends on this formula.

Same workflow

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  • btparseShares av.db curated category or tags: cli, developer-tools, parser, parsing.
  • cpp-peglibShares av.db curated category or tags: cli, developer-tools, parser, parsing.
  • htmlcleanerShares av.db curated category or tags: cli, developer-tools, parser, parsing.
  • htmlcxxShares av.db curated category or tags: cli, developer-tools, parser, parsing.
  • sqlparseShares av.db curated category or tags: cli, developer-tools, parser, parsing.

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.

Used sources

  • Geiger risk classifier
  • Nucleus package database
  • av.db category and tag curation
  • cross-ecosystem install command graph
  • curated package history
  • external package-manager database matches
  • package relationship graph
  • package version freshness
  • package-page enrichment