update

flake.nix

@@ -4,29 +4,61 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     flake-parts.url = "github:hercules-ci/flake-parts";
+    hooks = {
+      url = "github:cachix/git-hooks.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    treefmt = {
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
     {
       self,
+      nixpkgs,
       flake-parts,
-      ...
+      hooks,
+      treefmt,
     }@inputs:
     flake-parts.lib.mkFlake { inherit inputs; } {
-      systems = [
-        "x86_64-linux"
-        "aarch64-linux"
+      imports = [
+        hooks.flakeModule
+        treefmt.flakeModule
       ];
 
-      flake.nixosModules.default = import ./module.nix self;
+      systems = nixpkgs.lib.systems.flakeExposed;
 
       perSystem =
         {
+          config,
           pkgs,
           ...
         }:
         {
+          treefmt = {
+            projectRootFile = "flake.nix";
+
+            programs.nixfmt = {
+              enable = true;
+              package = pkgs.nixfmt-rfc-style;
+            };
+          };
+
+          pre-commit.settings.hooks = {
+            treefmt.enable = true;
+          };
+
+          devShells.default = pkgs.mkShellNoCC {
+            shellHook = ''
+              ${config.pre-commit.installationScript}
+            '';
+          };
+
           packages.default = pkgs.callPackage ./package.nix { };
         };
+
+      flake.nixosModules.default = import ./module.nix self;
     };
 }