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|
{ config, lib, pkgs, ... }:
with lib;
let
CONTAINS_NEWLINE_RE = ".*\n.*";
# The following values are reserved as complete option values:
# { - start of a group.
# """ - start of a multi-line string.
RESERVED_VALUE_RE = "[[:space:]]*(\"\"\"|\\{)[[:space:]]*";
NEEDS_MULTILINE_RE = "${CONTAINS_NEWLINE_RE}|${RESERVED_VALUE_RE}";
# There is no way to encode """ on its own line in a Minetest config.
UNESCAPABLE_RE = ".*\n\"\"\"\n.*";
toConfMultiline = name: value:
assert lib.assertMsg
((builtins.match UNESCAPABLE_RE value) == null)
''""" can't be on its own line in a minetest config.'';
"${name} = \"\"\"\n${value}\n\"\"\"\n";
toConf = values:
lib.concatStrings
(lib.mapAttrsToList
(name: value: {
bool = "${name} = ${toString value}\n";
int = "${name} = ${toString value}\n";
null = "";
set = "${name} = {\n${toConf value}}\n";
string =
if (builtins.match NEEDS_MULTILINE_RE value) != null
then toConfMultiline name value
else "${name} = ${value}\n";
}.${builtins.typeOf value})
values);
cfg = config.services.minetest-server;
flag = val: name: lib.optionals (val != null) ["--${name}" "${toString val}"];
flags = [
"--server"
]
++ (
if cfg.configPath != null
then ["--config" cfg.configPath]
else ["--config" (builtins.toFile "minetest.conf" (toConf cfg.config))])
++ (flag cfg.gameId "gameid")
++ (flag cfg.world "world")
++ (flag cfg.logPath "logfile")
++ (flag cfg.port "port")
++ cfg.extraArgs;
in
{
options = {
services.minetest-server = {
enable = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc "If enabled, starts a Minetest Server.";
};
gameId = mkOption {
type = types.nullOr types.str;
default = null;
description = lib.mdDoc ''
Id of the game to use. To list available games run
`minetestserver --gameid list`.
If only one game exists, this option can be null.
'';
};
world = mkOption {
type = types.nullOr types.path;
default = null;
description = lib.mdDoc ''
Name of the world to use. To list available worlds run
`minetestserver --world list`.
If only one world exists, this option can be null.
'';
};
configPath = mkOption {
type = types.nullOr types.path;
default = null;
description = lib.mdDoc ''
Path to the config to use.
If set to null, the config of the running user will be used:
`~/.minetest/minetest.conf`.
'';
};
config = mkOption {
type = types.attrsOf types.anything;
default = {};
description = lib.mdDoc ''
Settings to add to the minetest config file.
This option is ignored if `configPath` is set.
'';
};
logPath = mkOption {
type = types.nullOr types.path;
default = null;
description = lib.mdDoc ''
Path to logfile for logging.
If set to null, logging will be output to stdout which means
all output will be caught by systemd.
'';
};
port = mkOption {
type = types.nullOr types.int;
default = null;
description = lib.mdDoc ''
Port number to bind to.
If set to null, the default 30000 will be used.
'';
};
extraArgs = mkOption {
type = types.listOf types.str;
default = [];
description = lib.mdDoc ''
Additional command line flags to pass to the minetest executable.
'';
};
};
};
config = mkIf cfg.enable {
users.users.minetest = {
description = "Minetest Server Service user";
home = "/var/lib/minetest";
createHome = true;
uid = config.ids.uids.minetest;
group = "minetest";
};
users.groups.minetest.gid = config.ids.gids.minetest;
systemd.services.minetest-server = {
description = "Minetest Server Service";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
serviceConfig.Restart = "always";
serviceConfig.User = "minetest";
serviceConfig.Group = "minetest";
script = ''
cd /var/lib/minetest
exec ${pkgs.minetest}/bin/minetest ${lib.escapeShellArgs flags}
'';
};
};
}
|