# Install libslax with Homebrew Implementation of the SLAX language (an XSLT alternative). Version 3.1.6 via Homebrew; verified from local package data. ## Install ```sh sudo av install brew:libslax ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install libslax ``` Evidence: local Homebrew formula metadata ## Package facts - **Package key:** brew:libslax - **Package manager:** Homebrew - **Version:** 3.1.6 - **Source summary:** Implementation of the SLAX language (an XSLT alternative) - **Homepage:** - **Repository:** - **Generated:** 2026-08-03T19:37:03+00:00 ## Executables - slax-config (alias) - slaxproc (alias) ## Install behavior - Bottle: not available ## Freshness - Page generated: 2026-08-03 - Package-manager version: 3.1.6 ## Project history and usage libslax is Juniper's open-source C implementation of SLAX, an alternate syntax for XSLT used for Junos automation scripts. It provides the parser, writer, processor, debugger, profiler, and libraries behind the `slaxproc` command. ### Project history Juniper documentation describes SLAX, Stylesheet Language Alternative syntaX, as a language for Junos OS commit scripts, op scripts, event scripts, and SNMP scripts. It keeps XSLT semantics but replaces XML-heavy syntax with a style closer to C and Perl. The libslax distribution overview says SLAX was originally developed as part of Junos OS for on-box scripting to customize and enhance the CLI. It also describes libslax as an open-source New BSD licensed C implementation built on libxml2, libxslt, and libexslt. ### Adoption history libslax adoption is concentrated in the Junos ecosystem. Juniper states that standard Junos OS and Junos OS Evolved include the libslax tools, while the open-source distribution can be installed on a Unix-like computer for off-box SLAX development. The Juniper version table ties libslax versions to Junos releases, including libslax 0.14.1 with Junos OS 14.1, libslax 0.17.1 across Junos 14.2 through 17.3, libslax 0.22.0 across Junos 17.4 through 25.2, and libslax 3.1.6 for 25.4R1 and later. ### How it is used Network engineers use libslax indirectly through Junos script execution and directly through `slaxproc` to validate SLAX syntax, run or debug scripts, format files, and convert between SLAX and XSLT. The debugger and profiler make it more than a syntax translator. Outside Junos devices, Homebrew's package gives developers a local Unix-like environment for writing and testing SLAX scripts before deploying them into Junos automation workflows. ### Why package nerds care libslax is niche, but it is a useful package-manager artifact because it exposes a vendor network-automation language as a normal open-source C toolchain. It pulls Junos scripting out of appliance firmware and into local development environments. It also represents an unusual branch in XSLT history: rather than replacing XSLT, SLAX keeps the transform model and changes the surface syntax so humans can write network automation code with less XML noise. ### Timeline - 2014: Juniper's version table maps Junos OS 14.1 to libslax 0.14.1 and SLAX 1.1. - 2017: The libslax Read the Docs build records Juniper Networks copyright for the hosted documentation. - 2025-08-26: The Juniper/libslax GitHub repository release list records libslax-3.1.6. - 25.4R1: Juniper's version table maps Junos OS 25.4R1 and later to libslax 3.1.6 and SLAX 1.3. ### Related projects - libslax is built on libxml2, libxslt, and libexslt. It is closely related to Junos OS automation scripting, Juniper's junoscriptorium example repository, and the broader XSLT/XML tooling ecosystem. ### Sources - - - - - ## Security Notes library-like package without higher-risk signals. - **Geiger risk:** green / low - library-like package without higher-risk signals ## Combined YAML source View the package source record on GitHub. [combined/libslax.yml](https://github.com/mxcl/pkgdb/blob/main/combined/libslax.yml) ## Sources - pkg.so package database - Geiger risk classifier - curated package history - pkgdb category and tag curation - cross-ecosystem install command graph