29027fd1e1
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.
51 lines
1.3 KiB
Nix
51 lines
1.3 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.minecraft-server;
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in
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{
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options = {
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services.minecraft-server = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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If enabled, start a Minecraft Server. The listening port for
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the server is always <literal>25565</literal>. The server
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data will be loaded from and saved to
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<literal>/var/lib/minecraft</literal>.
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'';
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};
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jvmOpts = mkOption {
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type = types.str;
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default = "-Xmx2048M -Xms2048M";
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description = "JVM options for the Minecraft Service.";
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};
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};
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};
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config = mkIf cfg.enable {
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users.extraUsers.minecraft = {
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description = "Minecraft Server Service user";
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home = "/var/lib/minecraft";
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createHome = true;
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uid = config.ids.uids.minecraft;
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};
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systemd.services.minecraft-server = {
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description = "Minecraft Server Service";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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serviceConfig.Restart = "always";
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serviceConfig.User = "minecraft";
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script = ''
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cd /var/lib/minecraft
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exec ${pkgs.minecraft-server}/bin/minecraft-server ${cfg.jvmOpts}
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'';
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};
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};
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}
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