eleventyNavigation layout parent key order Template Languages HAML 10 layouts/langs.njk Eleventy Short Name File Extension NPM Package haml .haml haml.js You can override a .haml file’s template engine. Read more at Changing a Template’s Rendering Engine. HAML Options Optional: Set your own Library instance {% addedin "0.3.0" %} As an escape mechanism for advanced usage, pass in your own instance of the HAML library using the Configuration API. module.exports = function(eleventyConfig) { let haml = require("hamljs"); eleventyConfig.setLibrary("haml", haml); }; Supported Features Feature Syntax 🚫 Filters Not yet supported :filterName some text Read more about Filters. 🚫 Eleventy Universal Filters Not yet supported :filterName some text Read more about Filters.