nixpkgs/nixos/modules/services/hardware/upower.nix
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
2014-04-14 16:26:48 +02:00

66 lines
1.3 KiB
Nix

# Upower daemon.
{ config, lib, pkgs, ... }:
with lib;
{
###### interface
options = {
services.upower = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to enable Upower, a DBus service that provides power
management support to applications.
'';
};
};
};
###### implementation
config = mkIf config.services.upower.enable {
environment.systemPackages = [ pkgs.upower ];
services.dbus.packages = [ pkgs.upower ];
services.udev.packages = [ pkgs.upower ];
systemd.services.upower =
{ description = "Power Management Daemon";
path = [ pkgs.glib ]; # needed for gdbus
serviceConfig =
{ Type = "dbus";
BusName = "org.freedesktop.UPower";
ExecStart = "@${pkgs.upower}/libexec/upowerd upowerd";
};
};
system.activationScripts.upower =
''
mkdir -m 0755 -p /var/lib/upower
'';
# The upower daemon seems to get stuck after doing a suspend
# (i.e. subsequent suspend requests will say "Sleep has already
# been requested and is pending"). So as a workaround, restart
# the daemon.
powerManagement.resumeCommands =
''
${config.systemd.package}/bin/systemctl try-restart upower
'';
};
}