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home-manager/modules/services/wlsunset.nix

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{ config, lib, pkgs, ... }:
with lib;
let cfg = config.services.wlsunset;
in {
meta.maintainers = [ hm.maintainers.matrss ];
options.services.wlsunset = {
enable = mkEnableOption "wlsunset";
package = mkOption {
type = types.package;
default = pkgs.wlsunset;
defaultText = "pkgs.wlsunset";
description = ''
wlsunset derivation to use.
'';
};
latitude = mkOption {
type = types.str;
description = ''
Your current latitude, between `-90.0` and
`90.0`.
'';
};
longitude = mkOption {
type = types.str;
description = ''
Your current longitude, between `-180.0` and
`180.0`.
'';
};
temperature = {
day = mkOption {
type = types.int;
default = 6500;
description = ''
Colour temperature to use during the day, in Kelvin (K).
This value must be greater than `temperature.night`.
'';
};
night = mkOption {
type = types.int;
default = 4000;
description = ''
Colour temperature to use during the night, in Kelvin (K).
This value must be smaller than `temperature.day`.
'';
};
};
gamma = mkOption {
type = types.str;
default = "1.0";
description = ''
Gamma value to use.
'';
};
systemdTarget = mkOption {
type = types.str;
default = "graphical-session.target";
description = ''
Systemd target to bind to.
'';
};
};
config = mkIf cfg.enable {
assertions = [
(lib.hm.assertions.assertPlatform "services.wlsunset" pkgs
lib.platforms.linux)
];
systemd.user.services.wlsunset = {
Unit = {
Description = "Day/night gamma adjustments for Wayland compositors.";
PartOf = [ "graphical-session.target" ];
};
Service = {
ExecStart = let
args = [
"-l ${cfg.latitude}"
"-L ${cfg.longitude}"
"-t ${toString cfg.temperature.night}"
"-T ${toString cfg.temperature.day}"
"-g ${cfg.gamma}"
];
in "${cfg.package}/bin/wlsunset ${concatStringsSep " " args}";
};
Install = { WantedBy = [ cfg.systemdTarget ]; };
};
};
}