# 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 ```sh sudo av install brew:libfyaml ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install libfyaml ``` Evidence: local Homebrew formula metadata - MacPorts (94%): ```sh sudo port install libfyaml ``` Evidence: MacPorts ports tree: devel/libfyaml/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1 ### Linux - apk (92%): ```sh sudo apk add libfyaml ``` Evidence: Alpine Linux edge package indexes: libfyaml from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz - Debian apt (92%): ```sh sudo apt install libfyaml-dev ``` Evidence: Debian stable package indexes: libfyaml-dev from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz - dnf (92%): ```sh sudo dnf install fyaml-utils ``` Evidence: 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 - Nix (92%): ```sh nix profile install nixpkgs#libfyaml ``` Evidence: nixpkgs package indexes: pkgs/by-name/li/libfyaml/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - pacman (92%): ```sh sudo pacman -S libfyaml ``` Evidence: Arch Linux sync databases: libfyaml from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz - zypper (92%): ```sh sudo zypper install libfyaml-devel ``` Evidence: openSUSE Tumbleweed package metadata: libfyaml-devel from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst ## Package facts - **Package key:** brew:libfyaml - **Package manager:** Homebrew - **Package manager page:** - **Version:** 0.9.6 - **Source summary:** Fully feature complete YAML parser and emitter - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** MIT - **Source archive:** - **Last updated:** 2026-06-20T02:53:10Z - **Generated:** 2026-07-08T07:18:31+00:00 ## Executables - fy-compose (cli) - fy-dump (cli) - fy-filter (cli) - fy-join (cli) - fy-testsuite (cli) - fy-tool (cli) - fy-ypath (cli) - fy-compose (alias) - fy-dump (alias) - fy-filter (alias) - fy-join (alias) - fy-testsuite (alias) - fy-tool (alias) - fy-ypath (alias) ## Build dependencies - cmake ## 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: 0.9.6 - Package-manager updated: 2026-06-20 - Local data: ok - Upstream repository: https://github.com/pantoniou/libfyaml - info: No cached GitHub release or tag data was available. ## 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. ### Sources - - - - ## Security Notes library-like package without higher-risk signals. - **Geiger risk:** green / low - library-like package without higher-risk signals ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** libfyaml - **Version Scheme:** 0 - **Revision:** 0 - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** stable ## Other Package-Manager Records - Debian apt - libfyaml-dev - 0.8-1+b2: normalized package name match | Debian stable package indexes: libfyaml-dev from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Fully feature complete YAML parser and emitter (headers) | https://github.com/pantoniou/libfyaml - Debian apt - libfyaml-utils - 0.8-1+b2: normalized package name match | Debian stable package indexes: libfyaml-utils from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Fully feature complete YAML parser and emitter (CLI tools) | https://github.com/pantoniou/libfyaml - Debian apt - libfyaml0 - 0.8-1+b2: normalized package name match | Debian stable package indexes: libfyaml0 from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Fully feature complete YAML parser and emitter (library) | https://github.com/pantoniou/libfyaml - Nix - libfyaml: normalized package name match | nixpkgs package indexes: pkgs/by-name/li/libfyaml/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 - Ubuntu apt - libfyaml-dev - 0.8-1build1: normalized package name match | Ubuntu 24.04 LTS package indexes: libfyaml-dev from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | Fully feature complete YAML parser and emitter (headers) | https://github.com/pantoniou/libfyaml - Ubuntu apt - libfyaml-utils - 0.8-1build1: normalized package name match | Ubuntu 24.04 LTS package indexes: libfyaml-utils from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | Fully feature complete YAML parser and emitter (CLI tools) | https://github.com/pantoniou/libfyaml - Ubuntu apt - libfyaml0 - 0.8-1build1: normalized package name match | Ubuntu 24.04 LTS package indexes: libfyaml0 from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | Fully feature complete YAML parser and emitter (library) | https://github.com/pantoniou/libfyaml - apk - libfyaml - 0.9.5-r1: normalized package name match | Alpine Linux edge package indexes: libfyaml from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Fully feature complete YAML parser and emitter | https://github.com/pantoniou/libfyaml - apk - libfyaml-dev - 0.9.5-r1: normalized package name match | Alpine Linux edge package indexes: libfyaml-dev from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Fully feature complete YAML parser and emitter (development files) | https://github.com/pantoniou/libfyaml - apk - libfyaml-doc - 0.9.5-r1: normalized package name match | Alpine Linux edge package indexes: libfyaml-doc from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Fully feature complete YAML parser and emitter (documentation) | https://github.com/pantoniou/libfyaml - dnf - fyaml-utils - 0.8-9.fc44: normalized package name match | 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 | Utility tools for libfyaml | https://github.com/pantoniou/libfyaml - dnf - libfyaml - 0.8-9.fc44: normalized package name match | Fedora Rawhide package metadata: libfyaml from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst | Complete YAML parser and emitter | https://github.com/pantoniou/libfyaml - dnf - libfyaml-devel - 0.8-9.fc44: normalized package name match | 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 | Complete YAML parser and emitter | https://github.com/pantoniou/libfyaml - pacman - libfyaml - 0.9.6-2: normalized package name match | Arch Linux sync databases: libfyaml from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | Fully feature complete YAML parser and emitter | https://pantoniou.github.io/libfyaml/ - zypper - libfyaml-devel - 0.9.5-1.2: normalized package name match | openSUSE Tumbleweed package metadata: libfyaml-devel from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst | Development files for libfyaml | https://github.com/pantoniou/libfyaml - zypper - libfyaml-fy-tool - 0.9.5-1.2: normalized package name match | openSUSE Tumbleweed package metadata: libfyaml-fy-tool from https://download.opensuse.org/tumbleweed/repo/oss/repodata/be8d3611d25469107f32075a1697e69ec57a2b850b42348a658cc671ad5ec2b50760d02c3e59524d50da9a11d5be799bdaffba2e166e8ca8858512e3c0bd665d-primary.xml.zst | Command line tools for libfyaml | https://github.com/pantoniou/libfyaml ## 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. - [cmake](https://www.automicvault.com/pkg/brew/cmake/) - Build dependency declared by Homebrew. - [appstream](https://www.automicvault.com/pkg/brew/appstream/) - Popular package that depends on this formula. - [dhall-json](https://www.automicvault.com/pkg/brew/dhall-json/) - Shares av.db curated category or tags: cli, developer-tools, json, serialization, yaml. - [btparse](https://www.automicvault.com/pkg/brew/btparse/) - Shares av.db curated category or tags: cli, developer-tools, parser, parsing. - [cpp-peglib](https://www.automicvault.com/pkg/brew/cpp-peglib/) - Shares av.db curated category or tags: cli, developer-tools, parser, parsing. - [htmlcleaner](https://www.automicvault.com/pkg/brew/htmlcleaner/) - Shares av.db curated category or tags: cli, developer-tools, parser, parsing. - [htmlcxx](https://www.automicvault.com/pkg/brew/htmlcxx/) - Shares av.db curated category or tags: cli, developer-tools, parser, parsing. - [sqlparse](https://www.automicvault.com/pkg/brew/sqlparse/) - Shares av.db curated category or tags: cli, developer-tools, parser, parsing. - [urdfdom](https://www.automicvault.com/pkg/brew/urdfdom/) - Shares av.db curated category or tags: cli, developer-tools, parser, parsing. - [yajl](https://www.automicvault.com/pkg/brew/yajl/) - Shares av.db curated category or tags: c-library, cli, developer-tools, json, parser. - [dyff](https://www.automicvault.com/pkg/brew/dyff/) - Both packages work with overlapping file formats or content types. Shared terms: cli, developer, developer-tools, json, yaml. ## Combined YAML source View the package source record on GitHub. [combined/libfyaml.yml](https://github.com/automic-vault/db/blob/main/combined/libfyaml.yml) ## Sources - Nucleus package database - Geiger risk classifier - package-page enrichment - curated package history - package version freshness - av.db category and tag curation - package relationship graph - external package-manager database matches - cross-ecosystem install command graph