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{ pkgs, lib, config, inputs, ... } :
let
inherit (lib) concatStringsSep;
# Keys that can access the state of each instance (read/write!) over an rsync module
# Leave empty to disable
rsyncSSHKeys = config.users.users.defin.openssh.authorizedKeys.keys;
jre17 = pkgs.temurin-bin-17;
defaults = {
# 5 minutes tick timeout, for heavy packs
max-tick-time = 5 * 60 * 1000;
# It just ain't modded minecraft without flying around
allow-flight = true;
};
jvmOpts = concatStringsSep " " [
""
# "-XX:+UseG1GC"
# "-XX:+ParallelRefProcEnabled"
# "-XX:MaxGCPauseMillis=200"
# "-XX:+UnlockExperimentalVMOptions"
# "-XX:+DisableExplicitGC"
# "-XX:+AlwaysPreTouch"
# "-XX:G1NewSizePercent=40"
# "-XX:G1MaxNewSizePercent=50"
# "-XX:G1HeapRegionSize=16M"
# "-XX:G1ReservePercent=15"
# "-XX:G1HeapWastePercent=5"
# "-XX:G1MixedGCCountTarget=4"
# "-XX:InitiatingHeapOccupancyPercent=20"
# "-XX:G1MixedGCLiveThresholdPercent=90"
# "-XX:G1RSetUpdatingPauseTimePercent=5"
# "-XX:SurvivorRatio=32"
# "-XX:+PerfDisableSharedMem"
# "-XX:MaxTenuringThreshold=1"
];
in {
# minecraft server is closed source
# nixpkgs.config.allowUnfree = true;
imports = [ inputs.modded-minecraft-servers.module ];
services.modded-minecraft-servers = {
# This is mandatory for legal reasons.
eula = true;
# the name will be used for the state folder and system user.
# in this case, the folder is '/var/lib/mc-deceasedcraft'
# and the user is 'mc-deceasedcraft'
instances.deceasedcraft = {
enable = true;
inherit rsyncSSHKeys jvmOpts;
# jvmOpts = jvmOpts + " " + (concatStringsSep " " [
# "@libraries/net/minecraftforge/forge/1.18.2-40.2.4/unix_args.txt"
# ]);
jvmMaxAllocation = "1024m";
jvmInitialAllocation = "512m";
jvmPackage = jre17;
# I believe these options match services.minecraft-server.serverProperties options
serverConfig = defaults // {
# Port must be unique
server-port = 25565;
rcon-port = 25566;
motd = "Welcome to DeceasedCraft";
max-players = 10;
allow-nether = false;
spawn-protection=12;
max-tick-time=600000;
};
};
};
}
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