haos

modules/vms/home-assistant.nix

@@ -0,0 +1,67 @@
+# /home/death916/nixconfig/modules/vms/home-assistant.nix
+{ config, pkgs, ... }:
+
+let
+  # The incus-migrate tool is a separate package that we need to reference.
+  incus-migrate = pkgs.incus-migrate;
+
+  # The path to your HAOS image, as requested.
+  haos-image-path = "/home/death916/incus/haos_ova-15.2.qcow2";
+
+  # This script will run on boot to ensure the VM exists.
+  # It uses incus-migrate with a configuration file.
+  setupScript = pkgs.writeShellScript "ha-vm-setup.sh" ''
+    set -e
+    INCUS_CMD="${pkgs.incus}/bin/incus"
+    VM_NAME="home-assistant"
+
+    # 1. Check if the VM already exists. If so, do nothing.
+    if $INCUS_CMD info "''${VM_NAME}" >/dev/null 2>&1; then
+      echo "VM ''${VM_NAME} already exists. Ensuring it is running."
+      $INCUS_CMD start "''${VM_NAME}"
+      exit 0
+    fi
+
+    # 2. If the VM does not exist, create it using incus-migrate.
+    echo "Creating HAOS VM (''${VM_NAME}) with incus-migrate..."
+
+    # The configuration for incus-migrate, passed via stdin.
+    # This tells the tool what to do non-interactively.
+    cat <<EOF | ${incus-migrate}/bin/incus-migrate
+      name: ''${VM_NAME}
+      source_driver: disk
+      source_config:
+        path: "${haos-image-path}"
+      uefi: true
+      config:
+        limits.cpu: "2"
+        limits.memory: "4GiB"
+    EOF
+
+    # 3. Resize the disk after creation.
+    # incus-migrate doesn't set the size directly, so we do it here.
+    echo "Resizing root disk to 32GiB..."
+    $INCUS_CMD config device override "''${VM_NAME}" root size=32GiB
+
+    # 4. Start the VM.
+    $INCUS_CMD start "''${VM_NAME}"
+  '';
+in
+{
+  # This systemd service runs our setup script.
+  systemd.services.setup-ha-vm = {
+    description = "Setup Home Assistant Incus VM using incus-migrate";
+    after = [ "incus.service" ];
+    requires = [ "incus.service" ];
+    wantedBy = [ "multi-user.target" ];
+
+    serviceConfig = {
+      Type = "oneshot";
+      RemainAfterExit = true;
+      ExecStart = "${setupScript}";
+    };
+  };
+
+  # Ensure incus-migrate is available in the system path for the service.
+  environment.systemPackages = [ pkgs.incus-migrate ];
+}