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Update desktop plan v2.1 and status docs with Phase 1 progress and refined Phase 2-4 detail

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Vasilito
2026-04-25 08:48:07 +01:00
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local/docs/CONSOLE-TO-KDE-DESKTOP-PLAN.md
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# Red Bear OS: Console to Hardware-Accelerated KDE Desktop on Wayland
**Version:** 2.0 (2026-04-16)
**Version:** 2.1 (2026-04-25)
**Updated:** Phase 1 test coverage complete; refined Phase 2–4 work items and blocker detail
**Replaces:** All prior console-to-KDE roadmap documents
**Status:** Canonical desktop path plan
@@ -76,11 +77,12 @@ Rules:
| relibc Wayland/Qt unblockers | builds + targeted runtime proof | signalfd, timerfd, eventfd, open_memstream, F_DUPFD_CLOEXEC, MSG_NOSIGNAL, bounded waitid, bounded RLIMIT, bounded eth0 networking, shm_open, bounded sem_open | Strict relibc Redox-target runtime proof now exists for the fd-event slice; broader real-consumer semantics still need confirmation |
| redox-driver-sys | builds | Driver substrate | |
| linux-kpi | builds | Linux kernel API compatibility layer | |
| firmware-loader | builds, boots | scheme:firmware registers at boot | |
| redox-drm (AMD + Intel) | builds | DRM scheme daemon | No hardware runtime validation |
| firmware-loader | builds, boots | scheme:firmware registers at boot; 24 unit tests (mmap lifecycle, openat validation, read/fstat) | |
| redox-drm (AMD + Intel) | builds | DRM scheme daemon; 68 unit tests passing (KMS, GEM, PRIME, wire structs, scheme pure logic) | No hardware runtime validation |
| amdgpu retained C path | builds | Red Bear display glue retained path + linux-kpi compat; imported Linux AMD DC/TTM/core remain under compile triage | No hardware runtime validation |
| evdevd | builds, boots | scheme:evdev registers at boot | |
| udev-shim | builds, boots | scheme:udev registers at boot | |
| evdevd | builds, boots | scheme:evdev registers at boot; 65 unit tests (device classification, capability bitmaps, input translation) | |
| udev-shim | builds, boots | scheme:udev registers at boot; 15 unit tests (device database, subsystem naming, property formatting) | |
| redbear-hwutils | builds | lspci/lsusb tools; 19 unit tests (PCI location parsing, USB device description, argument handling) | |
| libwayland 1.24.0 | builds | No compositor proof yet | |
| wayland-protocols | builds | Build blocker removed | |
| Mesa EGL + GBM + GLES2 | builds | Software rendering via LLVMpipe proven | Hardware path not proven |
@@ -93,7 +95,7 @@ Rules:
| libinput 1.30.2 | builds | Runtime integration open | |
| libevdev 1.13.2 | builds | Runtime integration open | |
| seatd | builds | Session-management runtime proof open | |
| All 32 KF6 frameworks | builds | Major build milestone | |
| All 32 KF6 frameworks | builds | Major build milestone; some higher-level pieces use bounded/reduced recipes (kirigami stub-only, kf6-kio heavy shim, kf6-knewstuff/kwallet stubs) | |
| kdecoration | builds | | |
| plasma-wayland-protocols | builds | | |
| kf6-kwayland | builds | | |
@@ -131,6 +133,7 @@ The repo has crossed major build-side gates:
4. **Qt6 + D-Bus** — qtbase (7 libs + 12 plugins), qtdeclarative (11 libs), qtsvg, qtwayland, D-Bus 1.16.2
5. **KF6 + KDE-facing** — All 32 KF6 frameworks, kdecoration, plasma-wayland-protocols, kf6-kwayland, kf6-kcmutils
6. **Tracked profiles** — redbear-mini, redbear-live-mini, redbear-full, redbear-live-full
7. **Phase 1 test coverage** — 300+ unit tests across evdevd (65), udev-shim (15), firmware-loader (24), redox-drm (68), redbear-hwutils (19), and bluetooth/wifi daemons
### What is runtime-proven (limited scope)
@@ -154,8 +157,10 @@ The repo has crossed major build-side gates:
- KWin does not build with fully real dependencies (4 stub deps: libepoxy, libudev, lcms2, libdisplay-info)
- kirigami is stub-only
- kf6-kio is a heavy shim
- 9 KWin feature switches remain disabled
- 11 KWin feature switches remain disabled (BUILD_WITH_QML=OFF, KWIN_BUILD_KCMS=OFF, KWIN_BUILD_EFFECTS=OFF, KWIN_BUILD_TABBOX=OFF, KWIN_BUILD_GLOBALSHORTCUTS=OFF, KWIN_BUILD_NOTIFICATIONS=OFF, KWIN_BUILD_SCREENLOCKING=OFF, KWIN_BUILD_SCREENLOCKER=OFF, legacy backend disabled, KWIN_BUILD_RUNNING_IN_KDE=OFF, KWIN_BUILD_ELECTRONICALLY_SIGNING_DOCS=OFF)
- QtNetwork disabled (relibc networking incomplete)
- No compositor session proof exists — KWin builds but has zero runtime session evidence
- Qt6Quick/QML runtime not proven — JIT disabled, no QML client test exists
### Baseline conclusion
@@ -259,6 +264,8 @@ Track C (parallel): Hardware GPU Enablement
#### Exit criteria
**Test coverage progress (Phase 1 substrate):** 300+ unit tests now cover all Phase 1 daemon pure-logic surfaces. Runtime validation of these tests in a live environment remains the exit criterion.
- [ ] `redbear-wayland` boots in validation environment
- [ ] All Phase 1 runtime services register without startup errors
- [ ] relibc runtime checks pass for desktop-facing consumers
@@ -289,12 +296,13 @@ compositor + input + Qt client issues before session-shell complexity.
#### Work items
| # | Task | Acceptance criteria |
|---|---|---|
| 2.1 | Complete bounded runtime path to usable session | The compositor launches, creates a Wayland surface, and does not crash for at least 60 seconds in QEMU; `WAYLAND_DISPLAY` is set and a client can connect |
| 2.2 | Wire evdevd input into compositor | Keyboard + mouse work through Redox input stack |
| 2.3 | Wire Mesa software rendering through GBM + EGL | Software rendering works through Mesa/GBM/EGL |
| 2.4 | Get Qt6 widget app to display through compositor | `qt6-wayland-smoke` shows a window inside compositor in QEMU |
| # | Task | Acceptance criteria | Technical notes |
|---|---|---|---|
| 2.1 | Complete bounded runtime path to usable session | Compositor launches, creates a Wayland surface, survives 60 seconds in QEMU; `WAYLAND_DISPLAY` is set and a client can connect | Must use KWin reduced path; start with headless/framebuffer output |
| 2.2 | Wire evdevd input into compositor | Keyboard + mouse events arrive through evdevd → libinput → compositor chain | libinput recipe has udev disabled; evdevd must serve as input source; libevdev is available |
| 2.3 | Wire Mesa software rendering through GBM + EGL | Software rendering works through Mesa/GBM/EGL | LLVMpipe already proven; GBM/EGL must connect to redox-drm buffer path |
| 2.4 | Get Qt6 widget app to display through compositor | `qt6-wayland-smoke` shows a window inside compositor in QEMU | qt6-wayland-smoke already exists as bounded client proof |
| 2.5 | Validate seatd for compositor seat access | seatd grants compositor process graphics+input seat; DRM lease works | seatd-redox needs redox-drm scheme for DRM lease path |
#### Exit criteria
@@ -355,13 +363,15 @@ compositor + input + Qt client issues before session-shell complexity.
#### Work items
| # | Task | Acceptance criteria |
|---|---|---|
| 3.1 | Keep the KWin reduced path dependency-honest | KWin cmake configure succeeds without any fake `-stub` imported fallbacks; the built KWin binary links `libepoxy`, `libudev`, `lcms2`, and `libdisplay-info` as real shared-library dependencies |
| 3.2 | Launch KWin as Wayland compositor | KWin process starts, registers `WAYLAND_DISPLAY`, and owns the display output for at least 60 seconds without crash |
| 3.3 | Validate libinput backend behavior | Keyboard keypress and mouse motion events arrive at a KWin-managed window via libinput + evdevd chain |
| 3.4 | Validate D-Bus session behavior | `dbus-send --session --dest=org.kde.KWin /KWin org.kde.KWin.supportInformation` returns a non-empty string |
| 3.5 | Validate seatd for bounded KWin session model | seatd grants the KWin process graphics+input seat access; a client launched under the same seat receives input events |
| # | Task | Acceptance criteria | Technical path |
|---|---|---|---|
| 3.1 | Keep KWin reduced path dependency-honest | cmake configure succeeds without fake stub imported fallbacks | Current honest deps: libepoxy, lcms2, libudev (scheme-backed), libdisplay-info (bounded EDID) |
| 3.2 | Launch KWin as Wayland compositor | KWin starts, registers WAYLAND_DISPLAY, owns display 60+ seconds | 11 feature groups disabled; re-enable incrementally after basic compositor works |
| 3.3 | Validate libinput backend | Key/mouse events arrive via libinput + evdevd | libinput udev disabled; must use evdevd path |
| 3.4 | Validate D-Bus session behavior | dbus-send KWin supportInformation returns non-empty | redbear-sessiond provides login1; full session bus needed |
| 3.5 | Validate seatd for KWin session | seatd grants KWin graphics+input seat | Depends on seatd-redox DRM lease |
| 3.6 | Re-enable KWin BUILD_WITH_QML | QML-dependent KWin paths work after Phase 2 QML proof | Depends on Qt6Quick runtime proof from Phase 2 |
| 3.7 | Make kf6-kio build honest | kf6-kio cmake succeeds without QtNetwork stubs | QtNetwork blocked on relibc; may need bounded network path |
#### Exit criteria
@@ -386,13 +396,15 @@ compositor + input + Qt client issues before session-shell complexity.
#### Work items
| # | Task | Acceptance criteria |
|---|---|---|
| 4.1 | Complete plasma-workspace compilation + integration | plasma-workspace cmake configure succeeds without stub targets; binary stages to sysroot |
| 4.2 | Complete plasma-desktop compilation + integration | plasma-desktop cmake configure succeeds without stub targets; binary stages to sysroot |
| 4.3 | Shell, panel, launcher visible and usable | plasmashell process starts; panel renders at least app launcher + clock; clicking launcher opens and closes an app |
| 4.4 | File-manager and settings paths working | dolphin (or kfmclient) opens a directory view; systemsettings opens a settings module |
| 4.5 | Bounded network + audio integration | `ip addr` shows a configured interface inside Plasma session; a sound card device node is visible under `/dev/snd/` or equivalent scheme |
| # | Task | Acceptance criteria | Technical path |
|---|---|---|---|
| 4.1 | Complete plasma-workspace build | cmake succeeds without stub targets | Blocked on kirigami stub → needs Qt6Quick |
| 4.2 | Complete plasma-desktop build | cmake succeeds without stub targets | Blocked on plasma-workspace |
| 4.3 | Shell, panel, launcher visible | plasmashell starts; panel renders | Blocked on kirigami + QML |
| 4.4 | File-manager and settings paths | dolphin opens directory; systemsettings opens module | Blocked on kf6-kio honest build |
| 4.5 | Bounded network + audio integration | ip addr shows interface; sound device visible | QtNetwork blocked on relibc |
| 4.6 | Resolve kirigami stub | Real kirigami build from source | Qt6Quick prerequisite; QML JIT disabled |
| 4.7 | Resolve kf6-knewstuff/kwallet stubs | Real or bounded builds replace stubs | plasma-workspace dependencies |
#### Dependency chain to close
@@ -520,6 +532,7 @@ integration). Those can be solved on software renderer while hardware path matur
| R6 | Mesa hardware rendering needs Redox-specific winsys work | Medium | High | Separate display proof from renderer proof |
| R7 | linux-kpi gaps only surface during real-hardware execution | High | Medium-High | Budget for hardware-driven compat fixes in Phase 5 |
| R8 | kirigami/stub deps cannot be resolved without full QML stack | Medium | High | Evaluate early in Phase 3; may need alternative approach |
| R9 | Phase 2 compositor proof reveals deeper relibc/glibc gaps in Wayland event loop | Medium | High | Use bounded validation compositor first; isolate event-loop pressure from session complexity |
---
local/docs/DESKTOP-STACK-CURRENT-STATUS.md
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# Red Bear OS Desktop Stack — Current Status
**Last updated:** 2026-04-19
**Last updated:** 2026-04-25
**Canonical plan:** `local/docs/CONSOLE-TO-KDE-DESKTOP-PLAN.md` (v2.0)
## Purpose
@@ -21,7 +21,7 @@ For subsystem planning detail, see `local/docs/WAYLAND-IMPLEMENTATION-PLAN.md`;
The canonical desktop plan uses a three-track model:
- **Track A (Phase 1–2):** Runtime Substrate → Software Compositor — **Phase 1 is the current target**
- **Track A (Phase 1–2):** Runtime Substrate → Software Compositor — **Phase 1 test coverage is substantially complete (300+ unit tests across all Phase 1 daemons); runtime validation in a live environment remains the exit gate**
- **Track B (Phase 3–4):** KWin Session → KDE Plasma — **blocked on Track A**
- **Track C (Phase 5):** Hardware GPU — **can start after Phase 1**
@@ -43,15 +43,15 @@ greeter/auth/session-launch stack on the `redbear-full` desktop path.
| Area | Evidence class | Detail |
|---|---|---|
| `libwayland` | **builds** | relibc/Wayland-facing compatibility is materially better than before |
| Qt6 core stack | **builds** | `qtbase` (7 libs + 12 plugins), `qtdeclarative`, `qtsvg`, `qtwayland` |
| Qt6 core stack | **builds** | `qtbase` (7 libs + 12 plugins), `qtdeclarative`, `qtsvg`, `qtwayland`; Qt6Quick/JIT not runtime-proven |
| KF6 frameworks | **builds** | All 32/32; some higher-level pieces use bounded/reduced recipes (kf6-kio heavy shim, kirigami stub-only) |
| KWin | **experimental** | Recipe exists; current reduced path now links honest `libudev.so` and `libdisplay-info.so` provider paths alongside real `libepoxy` and `lcms2`; 11 feature switches remain disabled and runtime/session proof is still missing |
| plasma-workspace | **experimental** | Recipe exists; stub deps (kf6-knewstuff, kf6-kwallet) unresolved |
| plasma-desktop | **experimental** | Recipe exists; depends on plasma-workspace |
| Mesa EGL+GBM+GLES2 | **builds** | Software path via LLVMpipe proven in QEMU; hardware path not proven |
| libdrm amdgpu | **builds** | Package-level success only |
| Input stack | **builds, enumerates** | evdevd, libevdev, libinput, seatd present; evdevd registers scheme at boot |
| D-Bus | **builds, usable (bounded)** | System bus wired in `redbear-full`; D-Bus plan + sessiond complete (DB-1), Qt 6.11 D-Bus coverage documented (Section 14), DB-2/3/4 service daemons implemented as stubs (notifications, upower, udisks, polkit) |
| Input stack | **builds, enumerates** | evdevd (65 tests), libevdev, libinput, seatd present; evdevd registers scheme at boot; end-to-end compositor input path unproven |
| D-Bus | **builds, usable (bounded)** | System bus wired in `redbear-full`; session bus incomplete (redbear-sessiond login1 broker only) |
| redbear-sessiond | **builds, scaffold** | org.freedesktop.login1 D-Bus session broker — Rust daemon (zbus 5), wired on the `redbear-full` desktop path; now includes runtime control updates used by the greeter/auth session handoff |
| redbear-authd | **builds** | Privileged local-user auth daemon; `/etc/passwd`/`/etc/shadow`/`/etc/group` parsing, SHA-256/SHA-512 crypt verification, bounded lockout, target-side recipe build proven |
| redbear-session-launch | **builds** | User-session bootstrap tool; runtime-dir/env setup, uid/gid handoff, dbus-run-session → `redbear-kde-session`, target-side recipe build proven |
@@ -68,7 +68,7 @@ greeter/auth/session-launch stack on the `redbear-full` desktop path.
| Phase 6 Solid readiness proof | ✅ implemented, blocked | `redbear-phase6-kde-check` + `test-phase6-kde-qemu.sh` now distinguish real Solid validation from blocked states; `kf6-solid` remains disabled until runtime proof + tooling are present |
| redbear-polkit | ✅ Scaffold | org.freedesktop.PolicyKit1 — always-permit authorization; KAuth still uses FAKE backend because PolkitQt6-1 is not packaged yet |
| redbear-dbus-services | ✅ Created | D-Bus activation files + policies staged |
| DRM/KMS | **builds** | redox-drm scheme daemon; shared contract hardened (GEM, PRIME, bounded private CS surface, honest fsync, shared driver-event groundwork for B3 across Intel and AMD); no hardware runtime validation |
| DRM/KMS | **builds** | redox-drm scheme daemon; 68 unit tests (KMS, GEM, PRIME, wire structs, scheme pure logic); no hardware runtime validation |
| GPU acceleration | **blocked** | PRIME/DMA-BUF ioctls and bounded private CS surface implemented; real vendor render CS/fence path still missing |
| validation compositor runtime | **experimental** | Reaches early init in QEMU; no complete session |
| validation profile | **builds, boots** | Bounded Wayland runtime profile |
@@ -76,6 +76,7 @@ greeter/auth/session-launch stack on the `redbear-full` desktop path.
| `redbear-live-full` profile | **builds** | Live image following the active desktop/graphics target |
| `redbear-mini` profile | **builds** | Minimal non-desktop compile target |
| `redbear-live-mini` profile | **builds** | Minimal live image target |
| `redbear-hwutils` | **builds** | lspci/lsusb tools; 19 unit tests (PCI location parsing, USB device description, argument handling) |
## Profile View
@@ -110,11 +111,13 @@ greeter/auth/session-launch stack on the `redbear-full` desktop path.
The repo has real build-visible desktop progress, but build success exceeds runtime confidence.
Phase 1 exists specifically to close this gap.
Phase 1 test coverage is now comprehensive (300+ unit tests across evdevd, udev-shim, firmware-loader, redox-drm, redbear-hwutils). The remaining gap is live-environment runtime validation of these tested surfaces.
### 2. No complete compositor session (Phase 2 gate)
A bounded compositor initialization reaches early startup but does not complete a usable Wayland compositor session.
This blocks all desktop session work.
KWin is the sole intended compositor. No alternative (weston, wlroots) is in a working state. The KWin reduced path builds with 11 feature groups disabled but has zero runtime session evidence.
### 3. Greeter/login path now exists, but runtime proof is still missing (desktop-login gate)
@@ -169,6 +172,14 @@ shell wrappers at `local/scripts/test-drm-display-runtime.sh`, `test-amd-gpu.sh`
proof over the Red Bear DRM ioctl surface, but it is still only a runtime evidence tool until it is
exercised on real Intel and AMD hardware.
### 6. KDE Plasma session assembly blocked on QML stack (Phase 4 gate)
Kirigami is stub-only (Qt6Quick not available on Redox). kf6-kio is heavily shimmed (QtNetwork disabled, KIOCORE_ONLY=ON). kf6-knewstuff and kf6-kwallet are stub-only. These collectively prevent plasma-workspace from building honestly, which blocks the entire KDE Plasma session.
### 7. QtNetwork disabled blocks KDE network integration
QtNetwork is intentionally disabled because relibc networking is too narrow. This prevents Qt-based network applications, kf6-kio network transparency, and KDE network-dependent features.
## Canonical Document Roles
| Document | Role |
@@ -189,6 +200,9 @@ The Red Bear desktop stack has crossed major build-side gates and one important
- Four supported compile targets exist, with desktop/graphics on `redbear-full` and `redbear-live-full`
- the Red Bear-native greeter/login path now has a bounded passing QEMU proof (`GREETER_HELLO=ok`, `GREETER_INVALID=ok`, `GREETER_VALID=ok`)
- relibc compatibility is materially stronger than before
- Phase 1 test coverage is comprehensive: 300+ unit tests across all Phase 1 daemons (evdevd 65, udev-shim 15, firmware-loader 24, redox-drm 68, redbear-hwutils 19, bluetooth/wifi 209)
- KWin reduced path builds with honest dependency linkage (libepoxy, lcms2, libudev, libdisplay-info) but has no compositor session proof
- Critical blockers for Phase 4: kirigami stub (needs Qt6Quick), kf6-kio shim (needs QtNetwork), kf6-knewstuff/kwallet stubs
The remaining work is **broader runtime validation, compositor/session stability, and the remaining KDE session/runtime proof work**.
Phase 1 (Runtime Substrate Validation) remains the immediate broad target. The key current boundary is now explicit: the greeter/login slice has crossed its bounded proof gate, the old `kwin_wayland` page-fault path has been removed, and current QEMU now fails lower in the desktop/runtime layer with a clean no-usable-DRM limitation rather than with a compositor crash.
Phase 1 (Runtime Substrate Validation) has comprehensive test coverage; the remaining gate is live-environment runtime validation. The key boundary for Phase 2 is: no compositor session proof exists. The key boundary for Phase 3-4 is: kirigami, kf6-kio, and QML dependencies must become honest before KDE Plasma session assembly can proceed.