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nixpkgs/nixos/modules/services/hardware/lirc.nix
2019-01-05 13:22:39 +01:00

101 lines
2.5 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.lirc;
in {
###### interface
options = {
services.lirc = {
enable = mkEnableOption "LIRC daemon";
options = mkOption {
type = types.lines;
example = ''
[lircd]
nodaemon = False
'';
description = "LIRC default options descriped in man:lircd(8) (<filename>lirc_options.conf</filename>)";
};
configs = mkOption {
type = types.listOf types.lines;
description = "Configurations for lircd to load, see man:lircd.conf(5) for details (<filename>lircd.conf</filename>)";
};
extraArguments = mkOption {
type = types.listOf types.str;
default = [];
description = "Extra arguments to lircd.";
};
};
};
###### implementation
config = mkIf cfg.enable {
# Note: LIRC executables raises a warning, if lirc_options.conf do not exists
environment.etc."lirc/lirc_options.conf".text = cfg.options;
passthru.lirc.socket = "/run/lirc/lircd";
environment.systemPackages = [ pkgs.lirc ];
systemd.sockets.lircd = {
description = "LIRC daemon socket";
wantedBy = [ "sockets.target" ];
socketConfig = {
ListenStream = config.passthru.lirc.socket;
SocketUser = "lirc";
SocketMode = "0660";
};
};
systemd.services.lircd = let
configFile = pkgs.writeText "lircd.conf" (builtins.concatStringsSep "\n" cfg.configs);
in {
description = "LIRC daemon service";
after = [ "network.target" ];
unitConfig.Documentation = [ "man:lircd(8)" ];
serviceConfig = {
RuntimeDirectory = "lirc";
# Service runtime directory and socket share same folder.
# Following hacks are necessary to get everything right:
# 1. prevent socket deletion during stop and restart
RuntimeDirectoryPreserve = true;
# 2. fix runtime folder owner-ship, happens when socket activation
# creates the folder
PermissionsStartOnly = true;
ExecStartPre = [
"${pkgs.coreutils}/bin/chown lirc /run/lirc/"
];
ExecStart = ''
${pkgs.lirc}/bin/lircd --nodaemon \
${escapeShellArgs cfg.extraArguments} \
${configFile}
'';
User = "lirc";
};
};
users.users.lirc = {
uid = config.ids.uids.lirc;
group = "lirc";
description = "LIRC user for lircd";
};
users.groups.lirc.gid = config.ids.gids.lirc;
};
}