Pypi package fails to generate code

.gitignore

@@ -1,5 +1,7 @@
 ### Project-specific ###
 .vscode
+.direnv/
+.envrc
 
 # Created by https://www.toptal.com/developers/gitignore/api/windows,linux,macos,vim,emacs,visualstudiocode,jetbrains+all,python
 # Edit at https://www.toptal.com/developers/gitignore?templates=windows,linux,macos,vim,emacs,visualstudiocode,jetbrains+all,python

flake.nix

@@ -0,0 +1,47 @@
+{
+  description = "AsyncAPI Python Code Generator - type-safe async Python from AsyncAPI 3 specs";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+        python = pkgs.python310;
+      in
+      {
+        devShells.default = pkgs.mkShell {
+          name = "asyncapi-python";
+
+          packages = with pkgs; [
+            python
+            uv
+          ];
+
+          shellHook = ''
+            export UV_PYTHON_PREFERENCE=only-system
+
+            if [ ! -d .venv ]; then
+              echo "Creating virtual environment..."
+              uv venv
+            fi
+
+            source .venv/bin/activate
+
+            echo "AsyncAPI Python development environment"
+            echo "Python: $(python --version)"
+            echo "uv: $(uv --version)"
+          '';
+        };
+      }
+    );
+}

pyproject.toml

@@ -11,7 +11,8 @@ dependencies = ["pydantic>=2", "pytz"]
 [project.optional-dependencies]
 codegen = [
     "jinja2>=3.1.4",
-    "typer[all]>=0.12.5",
+    "typer>=0.15.0",
+    "click>=8.0.0",
     "pyyaml",
     "datamodel-code-generator[http]>=0.26.4",
     "black",