diff --git a/flake.lock b/flake.lock
index 2237126..f6b3be5 100644
--- a/flake.lock
+++ b/flake.lock
@@ -21,11 +21,11 @@
         "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1706830856,
-        "narHash": "sha256-a0NYyp+h9hlb7ddVz4LUn1vT/PLwqfrWYcHMvFB1xYg=",
+        "lastModified": 1698882062,
+        "narHash": "sha256-HkhafUayIqxXyHH1X8d9RDl1M2CkFgZLjKD3MzabiEo=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "b253292d9c0a5ead9bc98c4e9a26c6312e27d69f",
+        "rev": "8c9fa2545007b49a5db5f650ae91f227672c3877",
         "type": "github"
       },
       "original": {
@@ -38,11 +38,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1701680307,
-        "narHash": "sha256-kAuep2h5ajznlPMD9rnQyffWG8EM/C73lejGofXvdM8=",
+        "lastModified": 1685518550,
+        "narHash": "sha256-o2d0KcvaXzTrPRIo0kOLV0/QXHhDQ5DTi+OxcjO8xqY=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "4022d587cbbfd70fe950c1e2083a02621806a725",
+        "rev": "a1720a10a6cfe8234c0e93907ffe81be440f4cef",
         "type": "github"
       },
       "original": {
@@ -53,11 +53,11 @@
     },
     "impermanence": {
       "locked": {
-        "lastModified": 1706639736,
-        "narHash": "sha256-CaG4j9+UwBDfinxxvJMo6yOonSmSo0ZgnbD7aj2Put0=",
+        "lastModified": 1697303681,
+        "narHash": "sha256-caJ0rXeagaih+xTgRduYtYKL1rZ9ylh06CIrt1w5B4g=",
         "owner": "nix-community",
         "repo": "impermanence",
-        "rev": "cd13c2917eaa68e4c49fea0ff9cada45440d7045",
+        "rev": "0f317c2e9e56550ce12323eb39302d251618f5b5",
         "type": "github"
       },
       "original": {
@@ -71,16 +71,16 @@
         "blobs": "blobs",
         "flake-compat": [],
         "nixpkgs": [],
+        "nixpkgs-22_11": "nixpkgs-22_11",
         "nixpkgs-23_05": "nixpkgs-23_05",
-        "nixpkgs-23_11": "nixpkgs-23_11",
         "utils": "utils"
       },
       "locked": {
-        "lastModified": 1706742486,
-        "narHash": "sha256-sv/MISTeD0rqeVivpZJpynboMWJp6i62OmrZX1rGl38=",
-        "ref": "refs/heads/master",
-        "rev": "9e36323ae3dde787f761420465c3ae560f3dbf29",
-        "revCount": 577,
+        "lastModified": 1695910380,
+        "narHash": "sha256-CyzeiXQGm8ceEOSK1dffBCfO7JNp8XhQeNkUiJ5HxgY=",
+        "ref": "master",
+        "rev": "84783b661ecf33927c534b6476beb74ea3308968",
+        "revCount": 572,
         "type": "git",
         "url": "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver.git"
       },
@@ -91,11 +91,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1707092692,
-        "narHash": "sha256-ZbHsm+mGk/izkWtT4xwwqz38fdlwu7nUUKXTOmm4SyE=",
+        "lastModified": 1699099776,
+        "narHash": "sha256-X09iKJ27mGsGambGfkKzqvw5esP1L/Rf8H3u3fCqIiU=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "faf912b086576fd1a15fca610166c98d47bc667e",
+        "rev": "85f1ba3e51676fa8cc604a3d863d729026a6b8eb",
         "type": "github"
       },
       "original": {
@@ -105,13 +105,28 @@
         "type": "github"
       }
     },
-    "nixpkgs-23_05": {
+    "nixpkgs-22_11": {
       "locked": {
-        "lastModified": 1704290814,
-        "narHash": "sha256-LWvKHp7kGxk/GEtlrGYV68qIvPHkU9iToomNFGagixU=",
+        "lastModified": 1669558522,
+        "narHash": "sha256-yqxn+wOiPqe6cxzOo4leeJOp1bXE/fjPEi/3F/bBHv8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "70bdadeb94ffc8806c0570eb5c2695ad29f0e421",
+        "rev": "ce5fe99df1f15a09a91a86be9738d68fadfbad82",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-22.11",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs-23_05": {
+      "locked": {
+        "lastModified": 1684782344,
+        "narHash": "sha256-SHN8hPYYSX0thDrMLMWPWYulK3YFgASOrCsIL3AJ78g=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "8966c43feba2c701ed624302b6a935f97bcbdf88",
         "type": "github"
       },
       "original": {
@@ -120,29 +135,14 @@
         "type": "indirect"
       }
     },
-    "nixpkgs-23_11": {
-      "locked": {
-        "lastModified": 1706098335,
-        "narHash": "sha256-r3dWjT8P9/Ah5m5ul4WqIWD8muj5F+/gbCdjiNVBKmU=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "a77ab169a83a4175169d78684ddd2e54486ac651",
-        "type": "github"
-      },
-      "original": {
-        "id": "nixpkgs",
-        "ref": "nixos-23.11",
-        "type": "indirect"
-      }
-    },
     "nixpkgs-lib": {
       "locked": {
         "dir": "lib",
-        "lastModified": 1706550542,
-        "narHash": "sha256-UcsnCG6wx++23yeER4Hg18CXWbgNpqNXcHIo5/1Y+hc=",
+        "lastModified": 1698611440,
+        "narHash": "sha256-jPjHjrerhYDy3q9+s5EAsuhyhuknNfowY6yt6pjn9pc=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "97b17f32362e475016f942bbdfda4a4a72a8a652",
+        "rev": "0cbe9f69c234a7700596e943bfae7ef27a31b735",
         "type": "github"
       },
       "original": {
@@ -155,11 +155,11 @@
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1705957679,
-        "narHash": "sha256-Q8LJaVZGJ9wo33wBafvZSzapYsjOaNjP/pOnSiKVGHY=",
+        "lastModified": 1699110214,
+        "narHash": "sha256-L2TU4RgtiqF69W8Gacg2jEkEYJrW+Kp0Mp4plwQh5b8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "9a333eaa80901efe01df07eade2c16d183761fa3",
+        "rev": "78f3a4ae19f0e99d5323dd2e3853916b8ee4afee",
         "type": "github"
       },
       "original": {
@@ -178,11 +178,11 @@
         "nixpkgs-stable": []
       },
       "locked": {
-        "lastModified": 1706424699,
-        "narHash": "sha256-Q3RBuOpZNH2eFA1e+IHgZLAOqDD9SKhJ/sszrL8bQD4=",
+        "lastModified": 1699271226,
+        "narHash": "sha256-8Jt1KW3xTjolD6c6OjJm9USx/jmL+VVmbooADCkdDfU=",
         "owner": "cachix",
         "repo": "pre-commit-hooks.nix",
-        "rev": "7c54e08a689b53c8a1e5d70169f2ec9e2a68ffaf",
+        "rev": "ea758da1a6dcde6dc36db348ed690d09b9864128",
         "type": "github"
       },
       "original": {
@@ -209,11 +209,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1707015547,
-        "narHash": "sha256-YZr0OrqWPdbwBhxpBu69D32ngJZw8AMgZtJeaJn0e94=",
+        "lastModified": 1699252567,
+        "narHash": "sha256-WCzEBCu17uXilT9OZ3XSy/c4Gk/j3L7AUxBRHzNlQ4Y=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "23f61b897c00b66855074db471ba016e0cda20dd",
+        "rev": "0a9d5e41f6013a1b8b66573822f9beb827902968",
         "type": "github"
       },
       "original": {
diff --git a/nixos/machines/ghatanothoa/configuration.nix b/nixos/machines/ghatanothoa/configuration.nix
index 207e37f..3b4faa5 100644
--- a/nixos/machines/ghatanothoa/configuration.nix
+++ b/nixos/machines/ghatanothoa/configuration.nix
@@ -3,7 +3,6 @@
     ./hardware-configuration.nix
     ../../modules/jitsi.nix
     ../../roles
-    ../../roles/vm.nix
     ./network.nix
   ];
 
diff --git a/nixos/roles/default.nix b/nixos/roles/default.nix
index 2936ac3..60284a7 100644
--- a/nixos/roles/default.nix
+++ b/nixos/roles/default.nix
@@ -1,15 +1,16 @@
 {
   pkgs,
   lib,
+  modulesPath,
   ...
 }: {
   imports = [
     ./admins.nix
     ./nix_keys.nix
     ./prometheusNodeExporter.nix
+    (modulesPath + "/virtualisation/xen-domU.nix")
     ../modules/impermanence.nix
   ];
-
   nix = {
     extraOptions = ''
       experimental-features = nix-command flakes
diff --git a/nixos/roles/hardware.nix b/nixos/roles/hardware.nix
deleted file mode 100644
index f182583..0000000
--- a/nixos/roles/hardware.nix
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  # Use grub as bootloader.
-  # Systemd-boot does not support our legacy BIOS hardware,
-  # but only runs on UEFI systems.
-  boot.loader.grub.enable = true;
-}
diff --git a/nixos/roles/vm.nix b/nixos/roles/vm.nix
deleted file mode 100644
index 32fba6d..0000000
--- a/nixos/roles/vm.nix
+++ /dev/null
@@ -1,5 +0,0 @@
-{modulesPath, ...}: {
-  imports = [
-    (modulesPath + "/virtualisation/xen-domU.nix")
-  ];
-}