Add dev shell flake.nixHEADmaster

1 files changed, 43 insertions, 0 deletions

diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..97ff505
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,43 @@
+{
+  description = "Python Text RPG Dungeon Crawler";
+
+  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 = import nixpkgs {inherit system;};
+      python = pkgs.python312;
+
+      pythonEnv = python.withPackages (ps:
+        with ps; [
+          # Dev / QoL
+          ipython
+
+          # Testing
+          pytest
+          pytest-cov
+
+          # Linting & formatting
+          ruff
+          mypy
+        ]);
+    in {
+      devShells.default = pkgs.mkShell {
+        packages = [
+          pythonEnv
+          pkgs.just # optional: task runner (like make)
+        ];
+
+        shellHook = ''
+          echo "🐍 Python $(python --version) — TextRPG env ready"
+        '';
+      };
+    });
+}