diff --git a/flake.nix b/flake.nix
index a98302f..fd8e499 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,36 +3,64 @@
 
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
 
-  outputs = { self, nixpkgs }:
+  outputs =
+    { self, nixpkgs }:
     let
-      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
+      supportedSystems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
       forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
     in
     {
-      packages = forAllSystems (system:
+      packages = forAllSystems (
+        system:
         let
           pkgs = nixpkgs.legacyPackages.${system};
-          nix = pkgs.nix;
         in
         {
-          default = pkgs.stdenv.mkDerivation {
-            pname = "nix-scope-plugin";
-            version = "0.1.0";
-            src = self;
-            nativeBuildInputs = [ pkgs.cmake pkgs.pkg-config ];
-            buildInputs = [ nix nix.dev pkgs.boost pkgs.nlohmann_json ];
-          };
-        });
+          default =
+            {
+              nix ? pkgs.nix,
+            }:
+            pkgs.stdenv.mkDerivation {
+              pname = "nix-scope-plugin";
+              version = "0.1.0";
+              src = self;
+              nativeBuildInputs = [
+                pkgs.cmake
+                pkgs.pkg-config
+              ];
+              buildInputs = [
+                nix
+                nix.dev
+                pkgs.boost
+                pkgs.nlohmann_json
+              ];
+            };
+        }
+      );
 
-      devShells = forAllSystems (system:
+      devShells = forAllSystems (
+        system:
         let
           pkgs = nixpkgs.legacyPackages.${system};
           nix = pkgs.nix;
         in
         {
           default = pkgs.mkShell {
-            packages = [ pkgs.cmake pkgs.pkg-config nix nix.dev pkgs.boost pkgs.nlohmann_json ];
+            packages = [
+              pkgs.cmake
+              pkgs.pkg-config
+              nix
+              nix.dev
+              pkgs.boost
+              pkgs.nlohmann_json
+            ];
           };
-        });
+        }
+      );
     };
 }