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Re-diagnosis of the "btrfs-assistant 2.2 segfaults on launch" bug, and the fix is not the planned nixpkgs override: 1. gdb: the crash is btrfs_util_subvolume_iterator_next() — libbtrfsutil's UNPRIVILEGED subvolume-iteration path in btrfs-progs 6.17.1 (upstream-fixed after 6.17.1, kdave/btrfs-progs 886571653). Symbol versions were checked and match: not ABI/link drift. 2. VM A/B on real btrfs: as root it works (exit 0); as a user it segfaults (139). The pkexec launcher runs it as root — so the GUI path was fine all along, except… 3. …the distro shipped NO polkit authentication agent: every pkexec prompt in the session failed silently. That is the actual root cause of "the GUI doesn't open". Shipped: hyprpolkitagent (Hyprland's Qt agent — the prompt is Stylix-themed) via exec-once in hyprland.nix; `nomarchy-menu snapshot` prefers btrfs-assistant-launcher again, with the nomarchy-snapshots fzf flow kept as fallback (and for SSH); checks.snapshot-gui guards the root path + offscreen GUI event loop on a real btrfs volume so a lock bump can't silently regress it. No btrfs-progs patch: all our flows are root-side; the unprivileged fix arrives with a lock bump. Verified: V0 (flake check) + V2 (snapshot-gui check, executed green) + V1 (HM generation builds; hyprland.conf carries the agent exec-once; generated menu passes bash -n with the launcher wiring). Remaining V3 queued: first on-hardware themed polkit prompt. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Hardware queue — V3 checks only a human can run
Everything shipped at V1/V2 whose final verification needs real hardware.
Agents append (newest at the bottom of a section) with exact steps;
Bernardo runs them and either checks off ([x] + date + verdict) or files
the failure as a NOW bug in BACKLOG.md. Machines: the AMD dev box
(Ryzen AI laptop: AMD + fingerprint + NPU), the Latitude 5410 (Intel
QA machine), the T14s (webcam case).
Any machine (dev box is fine)
- Battery charge limit re-apply on unplug —
sudo nixos-rebuild switchwithpower.batteryChargeLimit = 80, physically unplug/replug AC, confirmcharge_control_end_thresholdre-reads 80. (udev trigger already VM-verified.) - SSH_AUTH_SOCK for GUI clients — after relogin, launch a GUI git
client (or
rofi-launched terminal-less app) and confirm it reaches gpg-agent's SSH socket without an interactive shell parent. - Night-light full cycle — first menu enable rebuilds + hyprsunset starts; later toggles are instant (no rebuild); an off survives reboot (ExecCondition); stopping hyprsunset restores gamma.
- Auto-timezone — enable from the menu; confirm geoclue finds the
zone,
/etc/localtimeupdates, and the Waybar clock refreshes (SIGUSR2 watcher) — also after a manualtimedatectl set-timezone. - Keyboard hotplug picker (re-verify after in-flake graduation) —
plug an external keyboard post-login, pick a layout in rofi, confirm
it applies per-device only, persists in
settings.keyboard.devices, and graduates into adevice{}block on the next rebuild. - Snapshots restore/rollback —
nomarchy-menu snapshotnow opens the btrfs-assistant GUI: a themed polkit prompt must appear (hyprpolkitagent — first on-hardware outing) and the GUI must open as root. Also exercise the fzf fallback in a terminal (sudo nomarchy-snapshots): browse/diff, restore a file (undochange), and a root-config rollback behind the typed-yesgate. Bonus check: any other pkexec flow now prompts instead of silently failing. - Update awareness — with
nomarchy.updates.enable, let the timer fire (or start the unit): indicator appears only when inputs are behind, notification only on count growth, click opens the upgrade flow. - VPN menu live paths — import a real WireGuard
.confand an.ovpnvia System → VPN, toggle up/down (● / ○ state), and the Tailscale block: up/down + exit-node without sudo (operator grant). - Printer menu — with
nomarchy.services.printing, System → Printers opens system-config-printer; add a printer, test page. - GRUB UEFI ISO theme render — boot the ISO on UEFI hardware: composed splash background, palette menu in the lower third, accent timeout bar.
- Visual theme pass — live ISO: all six identity themes (bars) +
the four authored rofi
.rasi(nord/retro-82/lumon/kanagawa) look right, not just parse. - Auto-commit on a real machine — System › Auto-commit toggles on
(row shows state, notification fires); a theme apply from SUPER+T then
shows a
nomarchy: apply theme …commit in~/.nomarchy(git log); unrelated dirty files in the checkout stay uncommitted; toggle off is itself the last commit. Also: the "Auto timezone (on/off)" row label now reflects the real state (the= truecomparison fix).
AMD dev box only
- AMD runtime bits — VA-API (
vainfo→ radeonsi), amd-pstate EPP active and PPD switching governors; opt-ins: ROCm (rocminfo, a GPU PyTorch/Ollama smoke) and the XDNA NPU driver loading. - Fingerprint —
fprintd-enroll+ (opt-in PAM) login/sudo.
Latitude 5410 only
- Media keys + gestures (from
dccceb4) — volume/brightness keys drive the OSD; touchpad gestures work. - v1 QA batch on-hardware pass (
583708dbatch was QEMU-verified) — general smoke before the nextmain → v1promotion.
T14s only
- Webcam IR-hide end-to-end on Nomarchy — installer detects the
RGB+IR pair, bakes
hardware.camera.hideIrSensor;wpctl statusshows one colour source; an app picker lists one camera; Howdy-style direct/dev/video2reads still work.