add flake

flake.nix

@@ -0,0 +1,41 @@
+{
+  description = "Apply lightmaps to Razer devices";
+
+  nixConfig.bash-prompt = "\[\\e[1m\\e[32rzr-develop\\e[0m\]$ ";
+
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+
+  outputs = { self, nixpkgs, flake-utils }:
+
+    flake-utils.lib.eachDefaultSystem
+      (system:
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+        in
+        {
+
+          # Package
+
+          packages.rzr =
+
+            pkgs.python3Packages.buildPythonApplication {
+
+              name = "rzr";
+              src = self;
+
+            };
+
+          defaultPackage = self.packages.${system}.rzr;
+
+          # Development shell
+
+          devShell = pkgs.mkShell {
+            buildInputs = with pkgs; [
+              python3
+            ];
+          };
+
+        }
+
+      );
+}