The step of mix linea_ui.install --hugeicons that draws the components' glyphs with Hugeicons instead of LineOne's own: the hugeicons dependency (its SVGs are vendored, not compiled) and config :linea_ui, :icons, :hugeicons. The Tailwind plugin that turns huge-* classes into masks is added to app.css by LineaUI.Installer.Assets.css/2.