feat(minecraft): self hosted minecraft server

hosts/battleship/configuration.nix

@@ -9,6 +9,8 @@
     ../../configuration.nix
 
     ./home.nix
+
+    ./services.nix
   ];
 
   users.users."guz" = {

hosts/battleship/services.nix

@@ -0,0 +1,51 @@
+{
+  pkgs,
+  pkgs-unstable,
+  config,
+  inputs,
+  lib,
+  ...
+}: {
+  imports = [
+    inputs.nix-minecraft.nixosModules.minecraft-servers
+  ];
+
+  nixpkgs.overlays = [
+    inputs.nix-minecraft.overlay
+  ];
+  nixpkgs.config.allowUnfree = true;
+  nixpkgs.config.allowUnfreePredicate = pkg:
+    builtins.elem (lib.getName pkg) [
+      "minecraft-server"
+      "minecraft-server-1.21.8"
+    ];
+
+  services.minecraft-servers = {
+    enable = true;
+    eula = true;
+    dataDir = "/var/lib/minecraft-servers";
+    managementSystem = {
+      tmux.enable = false;
+      systemd-socket.enable = true;
+    };
+    openFirewall = true;
+    servers = {
+      "heart-smp" = let
+        modpack = inputs.heart-modpack.packages.${pkgs.system}.default;
+        mcVersion = modpack.manifest.versions.minecraft;
+        fabricVersion = modpack.manifest.versions.fabric;
+        serverVersion = lib.replaceStrings ["."] ["_"] "fabric-${mcVersion}";
+      in {
+        enable = true;
+        autoStart = false;
+        package = pkgs.fabricServers.${serverVersion}.override {loaderVersion = fabricVersion;};
+        symlinks = {
+          "mods" = "${modpack}/mods";
+        };
+        files = {
+          "config" = "${modpack}/config";
+        };
+      };
+    };
+  };
+}