Implementierung v0

flake.nix

@@ -0,0 +1,44 @@
+{
+  description = "puzzleYOU release action";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+    flake-utils.url = "github:numtide/flake-utils";
+
+    pyproject-nix = {
+      url = "github:pyproject-nix/pyproject.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = { self, nixpkgs, flake-utils, pyproject-nix }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+
+        pythonProject = pyproject-nix.lib.project.loadPyproject {
+          projectRoot = ./.;
+        };
+
+        pythonInterpreter = pkgs.python313;
+      in
+        {
+          devShells.default = pkgs.mkShell {
+            buildInputs = [
+              pkgs.just
+              pkgs.gitea-actions-runner
+              (pythonInterpreter.withPackages
+                (pythonProject.renderers.withPackages {
+                  python = pythonInterpreter;
+                  extraPackages = ps: with ps; [ flake8 isort ];
+                }))
+            ];
+          };
+
+          packages.default = pythonInterpreter.pkgs.buildPythonPackage (
+            pythonProject.renderers.buildPythonPackage {
+              python = pythonInterpreter;
+            });
+        }
+    );
+}