Failed attempt to use flakes

I ran:

   nix run "https://flakehub.com/f/NixOS/nixpkgs/*.tar.gz#fh" -- init

...answered a few questions, and generated a broken config.

See DeterminateSystems/fh#130

.envrc

@@ -1,2 +1,2 @@
 # See https://github.com/nix-community/nix-direnv
-#use nix
+# use nix

.gitignore

@@ -1 +1,9 @@
 /.hugo_build.lock
+/public/CNAME
+/public/css/
+/public/fonts/
+/public/*.html
+/public/*.xml
+/public/js/
+/public/posts/
+/public/tags/

flake.nix

@@ -0,0 +1,36 @@
+# This flake was initially generated by fh, the CLI for FlakeHub (version 0.1.10)
+{
+  # A helpful description of your flake
+  description = "rfc20.org website";
+
+  # Flake inputs
+  inputs = {
+    flake-schemas.url = "https://flakehub.com/f/DeterminateSystems/flake-schemas/*.tar.gz";
+
+    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/*.tar.gz";
+  };
+
+  # Flake outputs that other flakes can use
+  outputs = { self, flake-schemas, nixpkgs }:
+    let
+      # Helpers for producing system-specific outputs
+      supportedSystems = [ "x86_64-linux" "aarch64-darwin" "x86_64-darwin" "aarch64-linux" ];
+      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
+        pkgs = import nixpkgs { inherit system; };
+      });
+    in {
+      # Schemas tell Nix about the structure of your flake's outputs
+      schemas = flake-schemas.schemas;
+
+      # Development environments
+      devShells = forEachSupportedSystem ({ pkgs }: {
+        default = pkgs.mkShell {
+          # Pinned packages available in the environment
+          packages = with pkgs; [
+            go_1_20
+            nixpkgs-fmt
+          ];
+        };
+      });
+    };
+}