2 files changed, 122 insertions, 0 deletions
diff --git a/users/sterni/machines/ingeborg/default.nix b/users/sterni/machines/ingeborg/default.nix
index 311a4b8d3fc0..206d3fcf53a7 100644
--- a/users/sterni/machines/ingeborg/default.nix
+++ b/users/sterni/machines/ingeborg/default.nix
@@ -12,6 +12,7 @@
     # (More or less) pluggable service configuration
     (depot.path.origSrc + "/ops/modules/btrfs-auto-scrub.nix")
     ./monitoring.nix
+    ./minecraft.nix
   ];
 
   config = {
diff --git a/users/sterni/machines/ingeborg/minecraft.nix b/users/sterni/machines/ingeborg/minecraft.nix
new file mode 100644
index 000000000000..ae367c5988df
--- /dev/null
+++ b/users/sterni/machines/ingeborg/minecraft.nix
@@ -0,0 +1,121 @@
+{ pkgs, depot, config, ... }:
+
+let
+  carpet = pkgs.fetchurl {
+    url = "https://github.com/gnembon/fabric-carpet/releases/download/1.4.101/fabric-carpet-1.19.4-1.4.101+v230319.jar";
+    sha256 = "1zppsl3x9iaj616phrllc8hirj4f5wqdjf6f9w2nm0mkxr66z10l";
+  };
+
+  carpet-extra = pkgs.fetchurl {
+    url = "https://github.com/gnembon/carpet-extra/releases/download/1.4.100/carpet-extra-1.19.4-1.4.100.jar";
+    sha256 = "1x3jh7nds5kkda445sbcgnz5fvw42f4pq0pvarz7rf9wgkz15i8r";
+  };
+
+  userGroup = "minecraft";
+
+  makeJvmOpts = megs: [
+    "-Xms${toString megs}M"
+    "-Xmx${toString megs}M"
+  ];
+
+  whitelist = {
+    spreadwasser = "242a66eb-2df2-4585-9a28-ac763ad0d0f9";
+    sternenseemann = "d8e48069-1905-4886-a5da-a4ee917ee254";
+  };
+
+  rconPasswordFile = config.age.secretsDir + "/minecraft-rcon";
+
+  baseProperties = {
+    white-list = true;
+    allow-flight = true;
+    difficulty = "hard";
+    function-permission-level = 4;
+    snooper-enabled = false;
+    view-distance = 12;
+    sync-chunk-writes = "false"; # the single biggest performance fix
+    max-tick-time = 6000000; # TODO(sterni): disable watchdog via carpet
+    enforce-secure-profile = false;
+  };
+in
+
+# TODO(sterni): regular backups of carpet world
+
+{
+  imports = [
+    ../../modules/minecraft-fabric.nix
+  ];
+
+  config = {
+    environment.systemPackages = [
+      pkgs.mcrcon
+      pkgs.jre
+    ];
+
+    users = {
+      users."${userGroup}" = {
+        isNormalUser = true;
+        openssh.authorizedKeys.keys = depot.users.sterni.keys.all;
+        shell = "${pkgs.fish}/bin/fish";
+      };
+
+      groups."${userGroup}" = { };
+    };
+
+    age.secrets = {
+      minecraft-rcon.file = depot.users.sterni.secrets."minecraft-rcon.age";
+    };
+
+    services.minecraft-fabric-server = {
+      creative = {
+        enable = false; # not actively used
+        version = "1.19.4";
+        mods = [
+          carpet
+          carpet-extra
+        ];
+        world = config.users.users.${userGroup}.home + "/worlds/creative";
+
+        jvmOpts = makeJvmOpts 2048;
+        user = userGroup;
+        group = userGroup;
+
+        inherit whitelist rconPasswordFile;
+        ops = whitelist;
+
+        serverProperties = baseProperties // {
+          server-port = 25566;
+          "rcon.port" = 25576;
+          gamemode = "creative";
+          enable-command-block = true;
+          motd = "storage design server";
+          spawn-protection = 2;
+        };
+      };
+
+      carpet = {
+        enable = true;
+        version = "1.19.4";
+        mods = [
+          carpet
+          carpet-extra
+        ];
+        world = config.users.users.${userGroup}.home + "/worlds/carpet";
+
+        jvmOpts = makeJvmOpts 4096;
+        user = userGroup;
+        group = userGroup;
+
+        inherit whitelist rconPasswordFile;
+        ops = whitelist;
+
+        serverProperties = baseProperties // {
+          server-port = 25565;
+          "rcon.port" = 25575;
+          motd = "ich tu fleissig hustlen nenn mich bob der baumeister";
+
+          level-seed = 7240251176989694927; # for posterity
+        };
+      };
+    };
+  };
+}