125 lines
3.9 KiB
Nix
125 lines
3.9 KiB
Nix
{ config, pkgs, lib, ... }:
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with lib;
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let
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cfg = config.services.clight;
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toConf = v:
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if builtins.isFloat v then toString v
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else if isInt v then toString v
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else if isBool v then boolToString v
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else if isString v then ''"${escape [''"''] v}"''
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else if isList v then "[ " + concatMapStringsSep ", " toConf v + " ]"
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else if isAttrs v then "\n{\n" + convertAttrs v + "\n}"
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else abort "clight.toConf: unexpected type (v = ${v})";
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getSep = v:
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if isAttrs v then ":"
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else "=";
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convertAttrs = attrs: concatStringsSep "\n" (mapAttrsToList
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(name: value: "${toString name} ${getSep value} ${toConf value};")
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attrs);
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clightConf = pkgs.writeText "clight.conf" (convertAttrs
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(filterAttrs
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(_: value: value != null)
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cfg.settings));
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in {
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options.services.clight = {
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enable = mkEnableOption "clight";
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temperature = {
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day = mkOption {
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type = types.int;
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default = 5500;
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description = ''
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Colour temperature to use during the day, between
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`1000` and `25000` K.
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'';
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};
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night = mkOption {
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type = types.int;
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default = 3700;
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description = ''
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Colour temperature to use at night, between
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`1000` and `25000` K.
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'';
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};
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};
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settings = let
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validConfigTypes = with types; oneOf [ int str bool float ];
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collectionTypes = with types; oneOf [ validConfigTypes (listOf validConfigTypes) ];
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in mkOption {
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type = with types; attrsOf (nullOr (either collectionTypes (attrsOf collectionTypes)));
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default = {};
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example = { captures = 20; gamma_long_transition = true; ac_capture_timeouts = [ 120 300 60 ]; };
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description = ''
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Additional configuration to extend clight.conf. See
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<https://github.com/FedeDP/Clight/blob/master/Extra/clight.conf> for a
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sample configuration file.
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'';
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};
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};
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config = mkIf cfg.enable {
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assertions = let
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inRange = v: l: r: v >= l && v <= r;
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in [
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{ assertion = config.location.provider == "manual" ->
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inRange config.location.latitude (-90) 90 && inRange config.location.longitude (-180) 180;
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message = "You must specify a valid latitude and longitude if manually providing location"; }
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];
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boot.kernelModules = [ "i2c_dev" ];
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environment.systemPackages = with pkgs; [ clight clightd ];
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services.dbus.packages = with pkgs; [ clight clightd ];
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services.upower.enable = true;
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services.clight.settings = {
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gamma.temp = with cfg.temperature; mkDefault [ day night ];
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} // (optionalAttrs (config.location.provider == "manual") {
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daytime.latitude = mkDefault config.location.latitude;
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daytime.longitude = mkDefault config.location.longitude;
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});
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services.geoclue2.appConfig.clightc = {
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isAllowed = true;
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isSystem = true;
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};
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systemd.services.clightd = {
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requires = [ "polkit.service" ];
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wantedBy = [ "multi-user.target" ];
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description = "Bus service to manage various screen related properties (gamma, dpms, backlight)";
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serviceConfig = {
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Type = "dbus";
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BusName = "org.clightd.clightd";
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Restart = "on-failure";
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RestartSec = 5;
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ExecStart = ''
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${pkgs.clightd}/bin/clightd
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'';
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};
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};
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systemd.user.services.clight = {
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after = [ "upower.service" "clightd.service" ];
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wants = [ "upower.service" "clightd.service" ];
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partOf = [ "graphical-session.target" ];
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wantedBy = [ "graphical-session.target" ];
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description = "C daemon to adjust screen brightness to match ambient brightness, as computed capturing frames from webcam";
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serviceConfig = {
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Restart = "on-failure";
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RestartSec = 5;
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ExecStart = ''
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${pkgs.clight}/bin/clight --conf-file ${clightConf}
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'';
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};
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};
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};
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}
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