5747dc9839
A manual `off` now drops ~/.local/state/nomarchy/nightlight-off and the hyprsunset unit refuses to (re)start while it exists (Unit.ConditionPathExists=!%h/...), so the off survives logout/reboot until toggled back on. `on`/toggle-on remove the marker before starting (a failed condition would otherwise no-op the start). Without the marker behaviour is unchanged: the service stays WantedBy=graphical-session.target and resumes its schedule at login, so persistence is opt-in via the toggle. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
80 lines
3.7 KiB
Nix
80 lines
3.7 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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# Persistent-off marker — mirrors the unit's ConditionPathExists below.
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# Present => night-light stays off across logout/reboot until toggled on.
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# Path is literal (not XDG_STATE_HOME) so it matches the unit's %h check.
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marker="$HOME/.local/state/nomarchy/nightlight-off"
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mark_off() { mkdir -p "$(dirname "$marker")"; : > "$marker"; }
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mark_on() { rm -f "$marker"; }
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if ! systemctl --user cat "$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 "$unit"; then
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printf '{"text":"","tooltip":"Night light on — warm on schedule (click to disable)","class":"on"}\n'
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else
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printf '{"text":"","tooltip":"Night light off (click to enable)","class":"off"}\n'
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fi ;;
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on) mark_on; systemctl --user start "$unit" ;;
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off) mark_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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mark_off; systemctl --user stop "$unit"
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notify-send "Night light off" "Screen back to true colours (stays off until re-enabled)."
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else
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mark_on; systemctl --user start "$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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# Persistent off: a manual `off` drops ~/.local/state/nomarchy/nightlight-off,
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# and this Condition makes the unit refuse to (re)start while it exists — so
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# an off survives logout/reboot. `nomarchy-nightlight on` removes it first
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# (a failed condition would otherwise no-op the start). %h = $HOME.
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systemd.user.services.hyprsunset.Unit.ConditionPathExists =
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lib.mkIf cfg.enable "!%h/.local/state/nomarchy/nightlight-off";
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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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