5c43a93285
Add a runtime toggle for the scheduled blue-light filter, the remaining optional item on the night-light roadmap entry. nomarchy-nightlight (nightlight.nix, always on PATH) starts/stops the hyprsunset *service* rather than poking its runtime gamma: `systemctl --user is-active` is the single source of truth, the screen restores to true colours when stopped, and it lets you force the filter off for colour-sensitive work (even at night) and back on without touching config. It self-gates — `status` prints nothing when the unit is absent — so the indicator hides itself when night-light isn't enabled. - Menu: `nomarchy-menu nightlight` toggles it; a self-gated row in the System submenu (shown only when the hyprsunset unit exists). - Waybar: a self-gating `custom/nightlight` indicator (moon = on, sun = off), in the generated bar and both summer whole-swap themes for parity. Verified: home generation builds, generated waybar config carries custom/nightlight, the menu has the dispatcher case + System row, both scripts pass bash -n, and status self-gates to empty with no unit. Pending an on-machine check that stopping hyprsunset cleanly restores the gamma. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
67 lines
2.8 KiB
Nix
67 lines
2.8 KiB
Nix
# Night light — a scheduled blue-light filter via hyprsunset (Hyprland's own
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# gamma/temperature tool). Warm at night, identity (no shift) by day;
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# hyprsunset's time-based `profile` entries handle the schedule and pick the
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# right state on session start. Opt-in via nomarchy.nightlight.enable.
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#
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# The hyprsunset HM service module is provided by home-manager; this only
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# configures it. Override anything with plain services.hyprsunset.* options.
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#
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# nomarchy-nightlight is the menu/Waybar toggle: it starts/stops the hyprsunset
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# *service* (so `systemctl --user is-active` is the single source of truth and
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# the screen restores to true colours when stopped), letting you force the
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# filter off for colour-sensitive work and back on without touching the config.
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{ config, lib, pkgs, ... }:
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let
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cfg = config.nomarchy.nightlight;
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# Toggle/status helper, on PATH so the menu and both the generated and
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# whole-swap Waybars can drive it by name. Self-gates: when the unit doesn't
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# exist (night-light not enabled) `status` prints nothing, so the Waybar
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# module hides itself — same pattern as the power-profile indicator.
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nomarchy-nightlight = pkgs.writeShellScriptBin "nomarchy-nightlight" ''
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unit=hyprsunset.service
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if ! systemctl --user cat "$unit" >/dev/null 2>&1; then
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[ "''${1:-}" = status ] && exit 0
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notify-send "Night light" "Not enabled — set nomarchy.nightlight.enable."
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exit 0
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fi
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case "''${1:-toggle}" in
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status)
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if systemctl --user is-active --quiet "$unit"; then
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printf '{"text":"","tooltip":"Night light on — warm on schedule (click to disable)","class":"on"}\n'
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else
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printf '{"text":"","tooltip":"Night light off (click to enable)","class":"off"}\n'
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fi ;;
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on) systemctl --user start "$unit" ;;
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off) systemctl --user stop "$unit" ;;
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toggle)
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if systemctl --user is-active --quiet "$unit"; then
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systemctl --user stop "$unit"
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notify-send "Night light off" "Screen back to true colours."
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else
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systemctl --user start "$unit"
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notify-send "Night light on" "Warm filter follows your schedule."
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fi ;;
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*) echo "usage: nomarchy-nightlight [toggle|status|on|off]" >&2; exit 64 ;;
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esac
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'';
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in
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{
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config = {
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services.hyprsunset = lib.mkIf cfg.enable {
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enable = true;
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settings.profile = [
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# Daytime: identity = no colour change.
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{ time = cfg.sunrise; identity = true; }
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# Night: shift to the warm temperature.
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{ time = cfg.sunset; temperature = cfg.temperature; }
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];
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};
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# Always on PATH (it self-gates at runtime), so a static whole-swap Waybar
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# can exec it even when night-light is off without the call failing.
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home.packages = [ nomarchy-nightlight ];
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};
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}
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