Build the site with nix

flake.nix

@@ -24,9 +24,25 @@
           inherit pkgs;
           src = inputs.eleventy-src;
         };
+
+        # The static site
+        site = pkgs.stdenv.mkDerivation {
+          pname = "my-static-site";
+          version = "1.0.0";
+          src = ./.;
+          buildInputs = [ eleventy ];
+          buildPhase = "eleventy";
+          installPhase = ''
+            mkdir -p $out/
+            echo $out
+            cp -r _site/* $out/
+          '';
+        };
       in
       {
         packages.eleventy = eleventy;
+        packages.site = site;
+        packages.default = site;
         devShells.default = pkgs.mkShell {
           buildInputs = with pkgs; [
             just