diff --git a/configuration.nix b/configuration.nix
new file mode 100644
index 0000000..fdffa2a
--- /dev/null
+++ b/configuration.nix
@@ -0,0 +1 @@
+# placeholder
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..b4e1dc1
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,19 @@
+{
+  description = "NAS on NixOS – root on ZFS";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/release-25.05";
+
+  outputs = { self, nixpkgs }:
+  let
+    system = "x86_64-linux";
+    pkgs   = import nixpkgs { inherit system; };
+  in {
+    nixosConfigurations.host = pkgs.lib.nixosSystem {
+      inherit system;
+      modules = [
+        ./hardware
+        ./configuration
+      ];
+    };
+  };
+}
diff --git a/hardware/default.nix b/hardware/default.nix
new file mode 100644
index 0000000..fdffa2a
--- /dev/null
+++ b/hardware/default.nix
@@ -0,0 +1 @@
+# placeholder