76 lines
2.2 KiB
Nix
76 lines
2.2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.redshift;
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in {
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options = {
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services.redshift.enable = mkOption {
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type = types.bool;
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default = false;
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example = true;
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description = "Enable Redshift to change your screen's colour temperature depending on the time of day";
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};
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services.redshift.latitude = mkOption {
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description = "Your current latitude";
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type = types.str;
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};
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services.redshift.longitude = mkOption {
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description = "Your current longitude";
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type = types.str;
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};
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services.redshift.temperature = {
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day = mkOption {
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description = "Colour temperature to use during day time";
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default = 5500;
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type = types.int;
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};
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night = mkOption {
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description = "Colour temperature to use during night time";
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default = 3700;
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type = types.int;
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};
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};
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services.redshift.brightness = {
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day = mkOption {
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description = "Screen brightness to apply during the day (between 0.1 and 1.0)";
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default = "1";
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type = types.str;
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};
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night = mkOption {
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description = "Screen brightness to apply during the night (between 0.1 and 1.0)";
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default = "1";
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type = types.str;
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};
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};
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services.redshift.extraOptions = mkOption {
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type = types.listOf types.str;
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default = [];
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example = [ "-v" "-m randr" ];
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description = "Additional command-line arguments to pass to the redshift(1) command";
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};
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};
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config = mkIf cfg.enable {
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systemd.services.redshift = {
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description = "Redshift colour temperature adjuster";
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requires = [ "display-manager.service" ];
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after = [ "display-manager.service" ];
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wantedBy = [ "graphical.target" ];
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serviceConfig.ExecStart = ''
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${pkgs.redshift}/bin/redshift \
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-l ${cfg.latitude}:${cfg.longitude} \
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-t ${toString cfg.temperature.day}:${toString cfg.temperature.night} \
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-b ${toString cfg.brightness.day}:${toString cfg.brightness.night} \
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${lib.strings.concatStringsSep " " cfg.extraOptions}
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'';
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environment = { DISPLAY = ":0"; };
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serviceConfig.Restart = "always";
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};
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};
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}
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