Phase 3 of the in-flake-state philosophy (mirroring night-light + the
keyboard-layout watcher): a System ▸ Display menu item picks an output's
resolution and persists it into the flake instead of a runtime-only tweak.
- rofi.nix: the `display` case reads `hyprctl monitors -j` (auto-skips the
chooser with one output), lists the output's advertised modes (rounded
refresh, deduped, highest-first) plus the preferred/highres/highrr
tokens, applies the pick INSTANTLY via `hyprctl keyword monitor` —
keeping the output's current position + scale, so only the resolution
changes — then persists it with `nomarchy-theme-sync set
settings.monitors.<name> <mode> --no-switch` (no rebuild).
- theme.nix: seed `settings.monitors = {}` (output-name -> "WxH@R") so a
sparse/older state file still evaluates; exposed via nomarchy.settings.
- hyprland.nix: `resolvedMonitors` overlays settings.monitors onto
nomarchy.monitors by name — a declared output keeps its other fields
with only the resolution swapped, an undeclared output (wildcard-only,
e.g. the laptop panel) becomes a fresh rule. So a later rebuild bakes
the menu pick into the generated monitor rule — the monitor twin of the
keyboard graduation. The menu pick wins over a hand-set resolution (it's
the explicit live action).
Monitor connector names are dot-free, so a direct dotted set-path is safe
(no whole-map read-modify-write like the keyboard watcher needs).
VM-verified via a headless-Hyprland nixosTest (run + removed; too heavy
for a CI gate): the graduation baked the rule into the generated
hyprland.conf, the set/get round-trip persisted, and `hyprctl keyword
monitor` actually changed the reported resolution. Only the interactive
rofi picker isn't headlessly driveable (same caveat as the keyboard watcher).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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