flake and some other stuff

flake.nix

@@ -0,0 +1,14 @@
+{
+  description = "main config";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+  };
+
+  outputs = { nixpkgs, ... }: {
+    nixosConfigurations.rainix = nixpkgs.lib.nixosSystem {
+      system = "x86_64-linux";
+      modules = [ ./configuration.nix ]; 
+    };
+  };
+}