nixpkgs/nixos/modules/services/hardware/tlp.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.tlp;
enableRDW = config.networking.networkmanager.enable;
tlp = pkgs.tlp.override {
inherit enableRDW;
};
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# XXX: We can't use writeTextFile + readFile here because it triggers
# TLP build to get the .drv (even on --dry-run).
confFile = pkgs.runCommand "tlp"
{ config = cfg.extraConfig;
passAsFile = [ "config" ];
}
''
cat ${tlp}/etc/default/tlp > $out
cat $configPath >> $out
'';
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in
{
###### interface
options = {
services.tlp = {
enable = mkOption {
type = types.bool;
default = false;
description = "Whether to enable the TLP daemon.";
};
extraConfig = mkOption {
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type = types.lines;
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default = "";
description = "Additional configuration variables for TLP";
};
};
};
###### implementation
config = mkIf cfg.enable {
powerManagement.scsiLinkPolicy = null;
powerManagement.cpuFreqGovernor = null;
systemd.sockets."systemd-rfkill".enable = false;
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systemd.services = {
"systemd-rfkill@".enable = false;
"systemd-rfkill".enable = false;
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tlp = {
description = "TLP system startup/shutdown";
after = [ "multi-user.target" ];
wantedBy = [ "multi-user.target" ];
before = [ "shutdown.target" ];
restartTriggers = [ confFile ];
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serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
ExecStart = "${tlp}/bin/tlp init start";
ExecStop = "${tlp}/bin/tlp init stop";
};
};
tlp-sleep = {
description = "TLP suspend/resume";
wantedBy = [ "sleep.target" ];
before = [ "sleep.target" ];
unitConfig = {
StopWhenUnneeded = true;
};
serviceConfig = {
Type = "oneshot";
RemainAfterExit = true;
ExecStart = "${tlp}/bin/tlp suspend";
ExecStop = "${tlp}/bin/tlp resume";
};
};
};
services.udev.packages = [ tlp ];
environment.etc = [{ source = confFile;
target = "default/tlp";
}
] ++ optional enableRDW {
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source = "${tlp}/etc/NetworkManager/dispatcher.d/99tlp-rdw-nm";
target = "NetworkManager/dispatcher.d/99tlp-rdw-nm";
};
environment.systemPackages = [ tlp ];
boot.kernelModules = [ "msr" ];
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};
}