Bundled fallback font licences

Status: accepted, 2026-10-13.

MixOS uses Inter and JetBrains Mono for its application typography and retains egui's bundled fallback fonts for additional glyph and emoji coverage. The pinned epaint_default_fonts 0.36.2 package declares (MIT OR Apache-2.0) AND OFL-1.1 AND Ubuntu-font-1.0.

The dependency checker permits those licences only for that exact package version. The general permissive code-dependency allowlist is unchanged. Updating the font bundle version requires reviewing the exception and the shipped licence files together. This does not change MixOS's own MIT OR Apache-2.0 licence or replace its primary typefaces.

The bundled font notices and complete upstream licence texts are recorded in libs/toolkit/assets/fonts/fallbacks/. Their hashes, the primary-font licence texts and the Lucide licence are pinned in the toolkit's licence manifest. libs/toolkit/scripts/install_licenses.mix verifies that manifest and installs the notices under share/licenses/toolkit/. Desktop release archives and the native image builder invoke this same installer.

The font licences permit embedding and redistribution subject to their conditions, including preservation of copyright and licence notices and restrictions on renaming modified fonts. We keep the upstream font files unmodified. References: SIL OFL 1.1 and Ubuntu Font Licence 1.0.

Lucide SVGs supply interface icons. Noto Emoji remains a text/emoji fallback; removing Material Symbols does not remove emoji coverage.