96 lines
3.2 KiB
Nix
96 lines
3.2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.tlp;
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enableRDW = config.networking.networkmanager.enable;
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tlp = pkgs.tlp.override { inherit enableRDW; };
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# TODO: Use this for having proper parameters in the future
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mkTlpConfig = tlpConfig: generators.toKeyValue {
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mkKeyValue = generators.mkKeyValueDefault {
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mkValueString = val:
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if isInt val then toString val
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else if isString val then val
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else if true == val then "1"
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else if false == val then "0"
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else if isList val then "\"" + (concatStringsSep " " val) + "\""
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else err "invalid value provided to mkTlpConfig:" (toString val);
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} "=";
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} tlpConfig;
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in
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{
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###### interface
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options = {
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services.tlp = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to enable the TLP power management daemon.";
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = "Additional configuration variables for TLP";
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};
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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boot.kernelModules = [ "msr" ];
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environment.etc = {
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"tlp.conf".text = cfg.extraConfig;
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} // optionalAttrs enableRDW {
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"NetworkManager/dispatcher.d/99tlp-rdw-nm".source =
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"${tlp}/etc/NetworkManager/dispatcher.d/99tlp-rdw-nm";
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};
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environment.systemPackages = [ tlp ];
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# FIXME: When the config is parametrized we need to move these into a
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# conditional on the relevant options being enabled.
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powerManagement = {
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scsiLinkPolicy = null;
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cpuFreqGovernor = null;
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cpufreq.max = null;
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cpufreq.min = null;
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};
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services.udev.packages = [ tlp ];
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systemd = {
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packages = [ tlp ];
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# XXX: These must always be disabled/masked according to [1].
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#
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# [1]: https://github.com/linrunner/TLP/blob/a9ada09e0821f275ce5f93dc80a4d81a7ff62ae4/tlp-stat.in#L319
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sockets.systemd-rfkill.enable = false;
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services.systemd-rfkill.enable = false;
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services.tlp = {
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# XXX: The service should reload whenever the configuration changes,
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# otherwise newly set power options remain inactive until reboot (or
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# manual unit restart.)
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restartTriggers = [ config.environment.etc."tlp.conf".source ];
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# XXX: When using systemd.packages (which we do above) the [Install]
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# section of systemd units does not work (citation needed) so we manually
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# enforce it here.
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wantedBy = [ "multi-user.target" ];
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};
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services.tlp-sleep = {
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# XXX: When using systemd.packages (which we do above) the [Install]
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# section of systemd units does not work (citation needed) so we manually
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# enforce it here.
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before = [ "sleep.target" ];
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wantedBy = [ "sleep.target" ];
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# XXX: `tlp suspend` requires /var/lib/tlp to exist in order to save
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# some stuff in there. There is no way, that I know of, to do this in
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# the package itself, so we do it here instead making sure the unit
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# won't fail due to the save dir not existing.
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serviceConfig.StateDirectory = "tlp";
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};
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};
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};
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}
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