71 lines
1.9 KiB
Nix
71 lines
1.9 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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{
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meta.maintainers = [ maintainers.somasis ];
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options = {
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services.sctd = {
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enable = mkEnableOption "sctd";
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baseTemperature = mkOption {
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type = types.ints.between 2500 9000;
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default = 4500;
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description = ''
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The base color temperature used by sctd, which should be between 2500 and 9000.
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See
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{manpage}`sctd(1)`
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for more details.
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'';
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};
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};
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};
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config = mkIf config.services.sctd.enable {
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assertions =
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[ (hm.assertions.assertPlatform "services.sctd" pkgs platforms.linux) ];
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systemd.user.services.sctd = {
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Unit = {
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Description =
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"Dynamically adjust the screen color temperature twice every minute";
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After = [ "graphical-session-pre.target" ];
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PartOf = [ "graphical-session.target" ];
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};
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Install.WantedBy = [ "graphical-session.target" ];
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Service = {
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ExecStart = "${pkgs.sct}/bin/sctd ${
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toString config.services.sctd.baseTemperature
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}";
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ExecStopPost = "${pkgs.sct}/bin/sct";
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Restart = "on-abnormal";
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SuccessExitStatus = 1;
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Environment = let
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# HACK: Remove duplicate messages in the journal; `sctd` calls
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# both `logger -s` (which outputs the message to stderr)
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# *and* outputs to stderr itself. We can at least silence
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# `logger`'s output without hiding sctd's own stderr.
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logger = pkgs.writeShellScriptBin "logger" ''
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exec 2>/dev/null
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exec ${pkgs.util-linux}/bin/logger "$@"
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'';
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in [
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"PATH=${
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lib.makeBinPath [
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pkgs.bash
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pkgs.coreutils
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pkgs.gnused
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pkgs.which
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pkgs.sct
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logger
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]
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}"
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];
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};
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};
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};
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}
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