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|
# Adapted from Nixpkgs.
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.redshift;
in {
meta.maintainers = [ maintainers.rycee ];
options.services.redshift = {
enable = mkOption {
type = types.bool;
default = false;
example = true;
description = ''
Enable Redshift to change your screen's colour temperature depending on
the time of day.
'';
};
latitude = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
Your current latitude, between <literal>-90.0</literal> and
<literal>90.0</literal>. Must be provided along with
longitude.
'';
};
longitude = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
Your current longitude, between <literal>-180.0</literal> and
<literal>180.0</literal>. Must be provided along with
latitude.
'';
};
provider = mkOption {
type = types.enum [ "manual" "geoclue2" ];
default = "manual";
description = ''
The location provider to use for determining your location. If set to
<literal>manual</literal> you must also provide latitude/longitude.
If set to <literal>geoclue2</literal>, you must also enable the global
geoclue2 service.
'';
};
temperature = {
day = mkOption {
type = types.int;
default = 5500;
description = ''
Colour temperature to use during the day, between
<literal>1000</literal> and <literal>25000</literal> K.
'';
};
night = mkOption {
type = types.int;
default = 3700;
description = ''
Colour temperature to use at night, between
<literal>1000</literal> and <literal>25000</literal> K.
'';
};
};
brightness = {
day = mkOption {
type = types.str;
default = "1";
description = ''
Screen brightness to apply during the day,
between <literal>0.1</literal> and <literal>1.0</literal>.
'';
};
night = mkOption {
type = types.str;
default = "1";
description = ''
Screen brightness to apply during the night,
between <literal>0.1</literal> and <literal>1.0</literal>.
'';
};
};
package = mkOption {
type = types.package;
default = pkgs.redshift;
defaultText = literalExample "pkgs.redshift";
description = ''
redshift derivation to use.
'';
};
tray = mkOption {
type = types.bool;
default = false;
example = true;
description = ''
Start the redshift-gtk tray applet.
'';
};
extraOptions = mkOption {
type = types.listOf types.str;
default = [ ];
example = [ "-v" "-m randr" ];
description = ''
Additional command-line arguments to pass to
<command>redshift</command>.
'';
};
};
config = mkIf cfg.enable {
assertions = [{
assertion = cfg.provider == "manual" -> cfg.latitude != null
&& cfg.longitude != null;
message = "Must provide services.redshift.latitude and"
+ " services.redshift.latitude when"
+ " services.redshift.provider is set to \"manual\".";
}];
systemd.user.services.redshift = {
Unit = {
Description = "Redshift colour temperature adjuster";
After = [ "graphical-session-pre.target" ];
PartOf = [ "graphical-session.target" ];
};
Install = { WantedBy = [ "graphical-session.target" ]; };
Service = {
ExecStart = let
providerString = if cfg.provider == "manual" then
"${cfg.latitude}:${cfg.longitude}"
else
cfg.provider;
args = [
"-l ${providerString}"
"-t ${toString cfg.temperature.day}:${
toString cfg.temperature.night
}"
"-b ${toString cfg.brightness.day}:${toString cfg.brightness.night}"
] ++ cfg.extraOptions;
command = if cfg.tray then "redshift-gtk" else "redshift";
in "${cfg.package}/bin/${command} ${concatStringsSep " " args}";
RestartSec = 3;
Restart = "always";
};
};
};
}
|
