Each library domain (kernel, device, client, protocol, csv,
xkeyboard-config) now owns a build.zig + build.zig.zon that wires and
exports its modules, with a standalone `zig build test` per domain.
The kernel package also exports abi (source stays in system/abi.zig) so
every consumer names one module instance. The root build swaps its
createModule calls for b.dependency(...).module(...) — no binary moves;
the root is the pilot consumer (docs/build-packages-plan.md). Path
dependencies deduplicate by resolved location, so the diamond
(root -> device -> kernel, root -> kernel) yields a single instance of
each module. Boot-image file list unchanged.
Turn a keycode + modifiers into a character. The input module delivers HID
usage keycodes but nothing mapped them to characters; rather than hand-maintain
layout tables, vendor the X11 xkeyboard-config database and compile it to native
Zig at build time (no X11 runtime), the way make-initial-ramdisk.py packs the
ramdisk.
- tools/make-xkeyboard-config.py: `fetch` downloads the pinned xkeyboard-config
release (2.44, sha256-verified), resolves the include graph for the configured
layouts, and vendors only the reached symbols files + keysymdef.h + COPYING +
PROVENANCE into library/xkeyboard-config/vendor/. `generate` parses that
(keycodes via a HID->xkb-name table, symbols with include/augment/override and
per-key type, keysymdef for keysym->Unicode) and emits generated/layouts.zig
deterministically.
- library/xkeyboard-config/xkeyboard-config.zig: the API over the generated data
— map(layout, hid_usage, mods) -> { keysym, character }, byName, and the
level-selection semantics (the generated tables stay pure data). Host tests
assert US letters/digits with Shift/Caps, GB £ vs US # on Shift+3, and French
AZERTY q-where-US-has-a — the end-to-end proof of the parse->emit->lookup path.
- build.zig: `xkeyboard-config` + `layouts` modules, the test wired into
`zig build test`, and a `zig build gen-xkeyboard-config` convenience step.
- Layouts: us, gb, de, fr, es, dvorak. Scope (documented): group 1, no dead-key
composition, curated key types. Standalone library; wiring it into the input
path to fill KeyEvent.character is a documented follow-up.
zig build test green (incl. the new keymap tests); regeneration is byte-identical;
full QEMU suite 48/48 (unaffected — no kernel/runtime/service change).
Daniel Samson