satr14
cc13b146aa
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71 lines
No EOL
2.5 KiB
Nix
71 lines
No EOL
2.5 KiB
Nix
{ inputs, lib, pkgs, ... }: let
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name = "mc1-pure-vanilla";
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ram-allocation-mb = 8192;
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headroom-allocation-mb = 1024;
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rcon-pass = "howdy";
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modpack = pkgs.fetchModrinthModpack {
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url = "https://cdn.modrinth.com/data/2wkV8mHp/versions/mFGJP1Ye/Server%20Optimization%201.21.11-2.1.mrpack";
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packHash = "sha256-odvJs6s1/T13RQhE3NnpCIrulc98nd9vo9Alg/aU404=";
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side = "server";
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};
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in {
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services.minecraft-servers.servers.${name} = {
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enable = true;
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autoStart = true;
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restart = "always";
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serverProperties = {
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server-ip = "0.0.0.0";
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server-port = 25566;
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server-name = name;
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motd = "Season 4 - §6§lPure Vanilla ⛏";
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log-ips = false;
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hide-online-players = true;
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difficulty = "normal";
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gamemode = "survival";
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max-world-size = 25000;
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spawn-protection = 0;
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pvp = true;
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online-mode = true;
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enable-query = true;
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enforce-secure-profile = false;
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pevent-proxy-connections = false;
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allow-flight = false;
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player-idle-timeout = 0;
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view-distance = 10;
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simulation-distance = 4;
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enable-rcon = true;
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sync-chunk-writes = false;
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"rcon.password" = rcon-pass;
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"rcon.port" = 25576;
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};
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symlinks = inputs.mc.lib.collectFilesAt modpack "mods"; # TODO: add cracked support
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files = inputs.mc.lib.collectFilesAt modpack "config";
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package = pkgs.fabricServers.fabric-1_21_11.override {
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jre_headless = pkgs.javaPackages.compiler.temurin-bin.jdk-25;
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loaderVersion = "0.19.2";
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};
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jvmOpts = let flags = [
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"-Xms${toString ram-allocation-mb}M"
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"-Xmx${toString ram-allocation-mb}M"
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"-XX:+UseZGC" # Use ZGC (requires Java v25+, 8+ CPU cores, 10GB+ RAM)
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"-XX:+ZGenerational" # Use generational ZGC (newer and better ZGC, requires Java v21+)
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"-XX:+UseCompactObjectHeaders" # Use compact object headers (requires Java v16+, saves a couple of bits per object)
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"--add-modules=jdk.incubator.vector" # Exposes SIMD instructions (requires full JDK, useful with performance mods like C2ME)
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"-XX:+AlwaysPreTouch" # Pre-allocates memory on startup, OS claims it immediately for JVM instead of negotiating it
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"-XX:+DisableExplicitGC" # Disables mods from manually invoking the GC
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"-XX:+PerfDisableSharedMem" # Disables constant /tmp writes for JVM metrics
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"-XX:SoftMaxHeapSize=${toString (ram-allocation-mb - headroom-allocation-mb)}M" # Leave 2GB headroom
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]; in lib.concatStringsSep " " flags;
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};
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} |