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