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Nomarchy/agent/BACKLOG.md
Bernardo Magri 2055842c33
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feat(memory): enable zram compressed-RAM swap by default (#76 slice)
First slice of BACKLOG #76 (hibernation + zram, split): zramSwap on by
default in modules/nixos/oom.nix — the memory-pressure layer before
earlyoom. zstd @ 50% RAM (nixpkgs defaults, explicit for reproducibility),
priority 100 so day-to-day paging fills zram first and any disk swapfile
stays reserved for #76's hibernate image (hibernation can't resume from
volatile zram). Follows the earlyoom mkDefault precedent — no toggle.

Adds checks.zram-swap runNixOSTest importing oom.nix, asserting the device
is an active swap, uses [zstd], and carries priority 100.

Verified: V2 checks.zram-swap PASS (/dev/zram0 in /proc/swaps, zstd,
prio 100); V1 full distro toplevel builds; V0 flake check --no-build green.
#76 remainder (disk swapfile default + resume + installer) still open.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-10 16:07:55 +01:00

9.1 KiB
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Backlog — the prioritized task queue

This is the only executable work list for agents. Product themes and v1.0 intent live in docs/VISION.md; design history in docs/ROADMAP.md; map in docs/README.md and agent/README.md.

Rules:

  • Agents take the topmost actionable item (see LOOP.md). Finished items are deleted here — the journal + git log are the record; durable design notes get a ✓-entry in docs/ROADMAP.md (and/or a note in VISION) if worth keeping.
  • Item numbers are stable IDs — never renumbered or reused. A gap in the sequence means shipped (or dropped) work; new items take the next free number regardless of tier.
  • Tags: [blocked:hw] needs real hardware (see HARDWARE-QUEUE.md) · [human] needs Bernardo · [stuck] two failed attempts, needs help · [big] must be split before starting.
  • Agents may append to PROPOSED and Decisions freely (include VISION § … or ROADMAP § … when relevant); only Bernardo moves items out of PROPOSED into the tiers.

NOW

(empty — NEXT's top item is the queue head)

NEXT

76. Hibernation default [big]

Product intent (Bernardo 2026-07-10): hibernation on by default; zram on alongside for live memory pressure. Disk swap ≥ RAM for the hibernate image; zram high-priority for day-to-day swap (not sufficient alone for resume).

✓ zram slice shipped (2026-07-10): zramSwap on by default in modules/nixos/oom.nix (zstd, 50% RAM, priority 100 so day-to-day paging stays off the disk swap reserved for the hibernate image); checks.zram-swap VM test asserts device/algorithm/priority (V2 pass). Remainder below is the hibernation half — disk swapfile default + resume + installer.

Reference layout (this machine — already hibernation-capable, no zram yet): LUKS (crypto_LUKS → mapper crypted) holds one BTRFS with @swap mounted at /swap; swapfile /swap/swapfile (here 16G); swapDevices = [{ device = "/swap/swapfile"; }]; boot.resumeDevice = "/dev/disk/by-uuid/<LUKS-root-uuid>"; boot.kernelParams = [ "resume_offset=…" ] from btrfs inspect-internal map-swapfile -r. The swapfile lives inside the encrypted volume (subvolume, not a separate cleartext partition). Installer path already sketches this (@swap + resume_offset patch in nomarchy-install / patch-template.py) when swapSize ≥ RAM-ish.

Scope (split before/while implementing — do not land as one mega-PR):

  1. Design — default swapSize (= RAM? round up?), LUKS+systemd-initrd resume (already used), what when install chose swapSize=0, migration for existing machines. (zram priority-vs-disk already settled + shipped.)
  2. Module — NixOS: ensure hibernation knobs are coherent when swapfile exists (resume device/offset); Power menu Hibernate already present — must work when swap is configured. (zram already default-on in oom.nix.)
  3. Installer — default new installs to hibernation-ready @swap swapfile (encrypted with root); keep 0 = no swap opt-out; document migration.
  4. Verify (required)
    • V0: eval / option / disko contracts.
    • V2 (mandatory, agent): exercise hibernation in the VM harness (runNixOSTest or install-test style) — encrypted root + BTRFS @swap swapfile + resume_offset; prove hibernate→resume path at least as far as QEMU allows (fail the item if only “config evaluates”).
    • V3: real laptop (this LUKS+@swap layout): Hibernate → power off → resume session; queue HARDWARE-QUEUE.

Out of scope: TLP; formatter. Prefer boring NixOS knobs; extend the existing installer swapfile story rather than inventing a second layout.

LATER

  • Wallpapers artifact split (ROADMAP § Faster switches — decided, deferred): pinned Nomarchy-wallpapers input so a state write stops re-copying 86 MB. Follow-on: pre-built theme variants if switches are still slow after.
  • Installer round 2 (ROADMAP § Installer): multi-disk BTRFS RAID, impermanence, BIOS/legacy boot.
  • Boot-from-snapshot: a systemd-boot equivalent of grub-btrfs.
  • Night-light geo mode: lat/long auto sunset/sunrise (means wlsunset).
  • Per-theme icon overrides / more icon packs (ROADMAP § Icon themes).
  • MIPI/IPU software-ISP camera support (no-UVC machines).
  • VPN exit-node richer display (country/city) (optional).
  • NixOS release bump → v2 [human]: deliberate, hand-edited, never automated; the previous attempt was discarded (2026-06-22) over a Hyprland OOM blocker — see MEMORY.md before retrying (NOW#3 should also soften that blocker class).

FUTURE (decided deferred — not the agent queue head)

Work we intend someday but explicitly not NEXT. Agents do not pick these unless Bernardo promotes one into NEXT/NOW.

20. KVM runner → VM suite in CI [human]

Status (2026-07-10): keep eval-only CI on the current Gitea stack (act_runner in docker-compose on the 4c/4GB IONOS VPS). Nested KVM + RAM headroom on that host are a poor fit next to Gitea; full checks.* VMs stay local / promotion-time until a separate KVM-capable machine exists.

When ready: register a second runner (host-mode nix + /dev/kvm, label nix-kvm — not the existing docker eval runner), then uncomment the vm-checks job in .gitea/workflows/check.yml (runs-on: nix-kvm, nix flake check + toplevel/HM builds). Do not enable the job until that label is online (Gitea queues forever otherwise).

Formatter — adopt later [human]

Intent: add a Nix formatter (likely nixfmt-rfc-style) in a dedicated pass: reformat the tree once, document in CONVENTIONS, optional CI check. Not the queue head — no drive-by reformats until that pass.

Hibernation + zram

Promoted → NEXT #76 (2026-07-10).

PROPOSED (agent suggestions — await human triage)

Agents: append here with a one-paragraph pitch (what/why/cost). Do not implement. Bernardo moves accepted items into a tier.

Open work only. Shipped exam/AC items (#47#63, #14, #52 theme high-ROI, etc.) live in the journal + ROADMAP — not here.

Product / day-2

(Battery charge-limit instant → shipped 2026-07-10; V3 PASS Latitude 5310: Custom charge type + live menu + unplug re-apply.)

(Portal/Flatpak IR camera → #71 docs (a); (b)/(c) still need T14s.)

(Post-install hardware hints residual → #73.)

(Look & Feel submenu → already shipped (Theme / wallpaper / night light); 2026-07-10: Reset wallpaper (auto) row; root stays six.)

  • NVIDIA first-class optionsdeferred past v1 (Bernardo 2026-07-10). Keep #59 commented install guidance; no nomarchy.hardware.nvidia.* until a hybrid maintainer + queue.

Installer / template

(Installer ↔ template SoT CI → #72; V2 install → #75.) (Installer chown flake dir → #65.) (MIGRATION.md snapshot layout → #64.) (Unattended-install test matrix → #74.) (Friendlier mkFlake theme-state errors → #66.)

Theme polish

(#52 residual ANSI → #68 ✓.) (Fidelity / hierarchy nits → #67 ✓.) (Import pipeline hierarchy → #70 ✓.) (audit-theme-design identity exemptions → #69 ✓.) (summer-day/night pair polish + status CSS + preview recapture → shipped 2026-07-10: JSON SoT, status states, theme-shot previews for executive-slate + neon-glass.)

(Identity taste retunes + hand btop.theme for white/vantablack/lumon/ hackerman/matte-black/miasma/neon-glass/boreal/executive-slate → shipped 2026-07-10.)

v1.0 pointer

See VISION. Open PROPOSED: NVIDIA wrappers deferred past v1; IR portal (b)/(c) hardware. Browser default = Chromium; power = PPD.

Decisions [human]

Open calls only Bernardo can make; agents add options/evidence but never decide. Resolved entries stay for history; agents treat them as closed.

Resolved (2026-07-10)

  • Docs site vs Markdown-in-repomarkdown in-repo for now (docs/, README). A rendered docs site is FUTURE if wanted.
  • Default browsership Chromium in templates/downstream/home.nix; mime → chromium-browser.desktop. Opt out: delete the line / override mime.
  • Default power backendkeep PPD (nomarchy.system.power.backend default). TLP remains the one-line opt-in. Rationale: stability + live profile API for menu/Waybar; Omarchys TLP experiment reverted.

Resolved (2026-07-10, more)

  • Formatter adoptionyes, but not now. Tracked as FUTURE (below). Nix-source style only (nixfmt-rfc-style or similar); one bulk reformat + CI/check when promoted. Until then: hand-aligned style per CONVENTIONS.

  • Hibernationwant by default (product intent). Needs a disk-backed swap (file or partition) sized for resume; not zram alone. Implementation is a future/NEXT item when designed (installer + resume device + encrypted-root story).

Still open (design detail under #76)

  • Swap sizing / LUKS resume — implement under NEXT #76 (disk ≥ RAM + zram on is the product default; exact installer numbers TBD in design).