Add ability to be imported as flake input

flake.nix

@@ -1,20 +1,31 @@
 {
   description = "nothing.run website";
-  inputs.flake-utils.url = "github:numtide/flake-utils";
 
   outputs = {
     self,
     nixpkgs,
-    flake-utils,
-  }:
-    flake-utils.lib.eachDefaultSystem
-    (
-      system: let
-        pkgs = nixpkgs.legacyPackages.${system};
-      in {
-        devShells.default = pkgs.mkShell {
-          packages = with pkgs;[nodejs];
-        };
-      }
-    );
+  }: let
+    system = "x86_64-linux";
+    pkgs = nixpkgs.legacyPackages.${system};
+  in {
+    devShells.x86_64-linux.default = pkgs.mkShell {
+      packages = with pkgs; [ nodejs ];
+    };
+
+    website = ./dist;
+
+    packages.x86_64-linux.default = pkgs.stdenv.mkDerivation {
+      pname = "website";
+      version = "0.1.0";
+      src = ./.;
+      buildPhase = ''
+        npm --version
+        echo 'Running "npm install"'
+        npm install
+        echo 'Running "npm run build"'
+        npm run build
+      '';
+      buildInputs = [ pkgs.nodejs ];
+    };
+  };
 }