Add flake.nix

flake.nix

@@ -0,0 +1,25 @@
+{
+  description = "My Shit Ass Nix Build";
+
+  outputs = inputs @ {
+    self,
+    nixpkgs,
+    ...
+  }: rec {
+    # The output for your laptop build
+    nixosConfigurations = {
+      laptop = nixpkgs.lib.nixosSystem {
+        specialArgs = {inherit self inputs;};
+        modules = [
+          ./hosts/laptop #individual config
+          ./modules/nixos #share configs
+        ];
+      };
+    };
+  };
+
+  # Flake inputs, think of it as external repos
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+  };
+}