Migrate mc server to nix-minecraft flake

hosts/servers/alexandria/minecraft.nix

@@ -1,19 +1,33 @@
 { inputs, config, pkgs, lib, ... }:
 
-{
-  services.minecraft-server = {
+let
+  modpack = pkgs.fetchPackwizModpack {
+    url =
+      "https://raw.githubusercontent.com/baduhai/FFS/06d253f0cd262b8d4a178d4db8e1a7188051e8d0/pack.toml";
+    packHash = "sha256-";
+  };
+  mcVersion = modpack.manifest.versions.minecraft;
+  fabricVersion = modpack.manifest.versions.fabric;
+  serverVersion =
+    lib.replaceStrings [ "." ] [ "_" ] "fabric-${mcVersion}-${fabricVersion}";
+
+in {
+  services.minecraft-servers = {
     enable = true;
     eula = true;
-    declarative = true;
-    openFirewall = true;
-    package = pkgs.papermc;
-    serverProperties = {
-      motd = "Bem-vindo a Alexandria";
-      difficulty = "hard";
-      gamemode = "survival";
-      online-mode = "false";
-      spawn-protection = "0";
-    };
     dataDir = "/data/minecraft";
+    servers."alexandria" = {
+      enable = true;
+      package = pkgs.fabricServers.${serverVersion};
+      openFirewall = true;
+      serverProperties = {
+        difficulty = "hard";
+        gamemode = "survival";
+        motd = "O Seridor";
+        online-mode = false;
+        spawn-protection = false;
+      };
+      symlink."mods" = "${modpack}/mods";
+    };
   };
 }