diff --git a/system/btrfs.nix b/system/btrfs.nix
new file mode 100644
index 00000000..1b2ae872
--- /dev/null
+++ b/system/btrfs.nix
@@ -0,0 +1,11 @@
+{...}: {
+  services.btrfs.autoScrub = {
+    enable = true;
+    interval = "Fri 07:00";
+    fileSystems = [
+      "/persist"
+      "/nix"
+    ];
+  };
+}
+
diff --git a/system/env.nix b/system/env.nix
new file mode 100644
index 00000000..8b582f61
--- /dev/null
+++ b/system/env.nix
@@ -0,0 +1,9 @@
+{...}: {
+  time.timeZone = "Europe/Berlin";
+
+  environment.variables = {
+    EDITOR = "hx";
+    VISUAL = "hx";
+    FLAKE = "/home/lilith/nixos";
+  };
+}