nixpkgs/nixos/modules/services/games/factorio.nix
2016-04-14 23:03:36 -07:00

103 lines
2.9 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.factorio;
name = "Factorio";
stateDir = "/var/lib/factorio";
configFile = pkgs.writeText "factorio.conf" ''
use-system-read-write-data-directories=true
[path]
read-data=${pkgs.factorio-headless}/share/factorio/data
write-data=${stateDir}
'';
in
{
options = {
services.factorio = {
enable = mkEnableOption name;
port = mkOption {
type = types.int;
default = 34197;
description = ''
The port to which the service should bind.
This option will also open up the UDP port in the firewall configuration.
'';
};
saveName = mkOption {
type = types.string;
default = "default";
description = ''
The name of the savegame that will be used by the server.
When not present in ${stateDir}/saves, it will be generated before starting the service.
'';
};
# TODO Add more individual settings as nixos-options?
# TODO XXX The server tries to copy a newly created config file over the old one
# on shutdown, but fails, because it's in the nix store. When is this needed?
# Can an admin set options in-game and expect to have them persisted?
configFile = mkOption {
type = types.path;
default = configFile;
defaultText = "configFile";
description = ''
The server's configuration file.
The default file generated by this module contains lines essential to
the server's operation. Use its contents as a basis for any
customizations.
'';
};
};
};
config = mkIf cfg.enable {
users = {
users.factorio = {
uid = config.ids.uids.factorio;
description = "Factorio server user";
group = "factorio";
home = stateDir;
createHome = true;
};
groups.factorio = {
gid = config.ids.gids.factorio;
};
};
systemd.services.factorio = {
description = "Factorio headless server";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
preStart = ''
test -e ${stateDir}/saves/${cfg.saveName}.zip || ${pkgs.factorio-headless}/bin/factorio \
--config=${cfg.configFile} \
--create=${cfg.saveName}
'';
serviceConfig = {
User = "factorio";
Group = "factorio";
Restart = "always";
KillSignal = "SIGINT";
WorkingDirectory = stateDir;
PrivateTmp = true;
UMask = "0007";
ExecStart = toString [
"${pkgs.factorio-headless}/bin/factorio"
"--config=${cfg.configFile}"
"--port=${toString cfg.port}"
"--start-server=${cfg.saveName}"
];
};
};
networking.firewall.allowedUDPPorts = [ cfg.port ];
};
}