Adds nix package and overlay

flake.nix

@@ -27,5 +27,22 @@
         '
       '';
     };
+
+    packages.${system}.default = pkgs.stdenv.mkDerivation {
+      name = "ctrlz.es";
+      src = ./.;
+      buildInputs = with pkgs; [hugo];
+
+      unpackPhase = false;
+
+      buildPhase = "hugo";
+
+      installPhase = ''
+        mkdir -p $out/var/lib/ctrlz.es
+        cp -r public/* $out/var/lib/ctrlz.es/
+      '';
+    };
+
+    overlays.default = final: prev: {ctrlz = self.packages.${system}.default;};
   };
 }