git: ignore nix flake

.gitignore

@@ -155,3 +155,6 @@ out/
 /kalpa.toml
 /indexes.json
 /dots.json
+
+# nix
+result

flake.nix

@@ -13,20 +13,22 @@
 	let
 		pkgs = nixpkgs.legacyPackages.${system};
 		poetry2nix = poetry2nixSrc.lib.mkPoetry2Nix { inherit pkgs; };
+		kalpaApp = poetry2nix.mkPoetryApplication {
+			projectDir = self;
+			python = pkgs.python39;
+			preferWheels = true;
+		};
+		kalpaEnv = poetry2nix.mkPoetryEnv {
+			projectDir = self;
+			python = pkgs.python39;
+			preferWheels = true;
+			overrides = poetry2nix.overrides.withDefaults (self: super: {
+			});
+		};
 	in {
 		packages = {
-			kalpaApp = poetry2nix.mkPoetryApplication {
-				projectDir = self;
-				python = pkgs.python39;
-				preferWheels = true;
-			};
-			kalpaEnv = poetry2nix.mkPoetryEnv {
-				projectDir = self;
-				python = pkgs.python39;
-				preferWheels = true;
-				overrides = poetry2nix.overrides.withDefaults (self: super: {
-				});
-			};
+			inherit kalpaEnv;
+			inherit kalpaApp;
 			default = self.packages.${system}.kalpaEnv;
 		};
 		devShells.default = pkgs.mkShell {