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dotfiles/.claude/tasks/0026-hyprlock-and-hypridle.md
alexion 005928ef88 feat(desktop): add hyprlock and hypridle (task 0026)
Add a session-lock screen and idle management to the Hyprland-native
subdirectory, enabled through the desktop aggregator.

hyprlock draws through the compositor session-lock protocol, themed by
Stylix, with a centered field and clock. Super+X locks directly through a
guarded launch so the key works without the idle daemon.

hypridle locks on idle and powers the displays off, with tunable timeouts,
and locks before every suspend. Lid-close routes through logind to suspend,
which the pre-sleep lock covers, so the lid lands at a locked screen.
2026-07-22 18:37:32 -04:00

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---
spec: hyprland-desktop
blocked-by: 0021-desktop-group-and-hyprland-session
---
## What to build
A secure lock screen and idle management, so going idle, suspending, or closing the lid always lands at a locked screen.
Add hyprlock and hypridle modules in the Hyprland-native subdirectory of the desktop group, enabled through the aggregator.
hyprlock uses the compositor session-lock protocol so the lock surface is owned by the compositor and survives a locker crash.
hypridle is wired for lock-on-idle, screen-off, lock-before-suspend, and lid-close, with tunable timeouts.
Bind lock on `Super+X`.
## Acceptance criteria
- [x] hyprlock and hypridle modules exist in the Hyprland-native subdirectory and are enabled by the aggregator.
- [x] hyprlock uses the compositor session-lock protocol.
- [x] hypridle triggers lock-on-idle, screen-off, lock-before-suspend, and lid-close, with tunable timeouts.
- [x] Lock is bound on `Super+X`.
- [x] neogaia builds green under `nix flake check`.
## Implementation Notes
- **hyprlock is inherently the session-lock client.**
Criterion 2 needs no option: hyprlock draws its surface through the ext-session-lock protocol, so the compositor owns the surface and it survives a crash of the locker.
The module therefore carries only geometry and behaviour.
- **Stylix themes the lock screen.**
Colors and the lock background come from Stylix's hyprlock target, which merges into the same `background` and `input-field` blocks, so the module sets only field geometry and a `$TIME` label.
- **lid-close is wired through logind, not a hypridle listener.**
hypridle cannot observe lid events, so the module sets `services.logind.settings.Login.HandleLidSwitch = "suspend"`, and the shared `before_sleep_cmd` locks ahead of the suspend.
The lid therefore lands at a locked screen, satisfying the criterion by outcome even though the trigger is logind's.
- **`Super+X` is self-contained.**
The keybind execs a guarded hyprlock launch directly (`pidof hyprlock || hyprlock`) rather than `loginctl lock-session`, so the lock key works whenever hyprlock is enabled, without depending on hypridle being the running lock handler.
hypridle's own idle and suspend paths still funnel through `loginctl lock-session` so logind tracks the locked state on those paths.
- **Idle-suspend was left out.**
The spec enumerates lock-on-idle, screen-off, lock-before-suspend, and lid-close, so hypridle does not itself suspend on idle.
`before_sleep_cmd` handles lock-before-suspend for the lid and any manual or externally configured suspend.
Adding an idle-suspend stage is a reasonable future knob but was not requested here.
- **One hyprlock package.**
Both the keybind and hypridle's `lock_cmd` reference `programs.hyprlock.package`, so the locker never splits versions between the two call sites.