🎨 add pre-commit-hooks and cleanup

flake.nix

@@ -4,11 +4,18 @@
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
     flake-utils.url = "github:numtide/flake-utils";
-    home-manager.url = "github:nix-community/home-manager";
-    home-manager.inputs.nixpkgs.follows = "nixpkgs";
+    home-manager = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    pre-commit-hooks = {
+      url = "github:cachix/pre-commit-hooks.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
   };
 
-  outputs = { self, nixpkgs, home-manager, flake-utils, ... }:
+  outputs = { self, nixpkgs, home-manager, flake-utils, pre-commit-hooks, ... }:
     flake-utils.lib.eachSystem [ "x86_64-linux" "x86_64-darwin" "aarch64-darwin" ]
       (system:
         let pkgs = nixpkgs.legacyPackages.${system};
@@ -28,12 +35,28 @@
           packages.default =
             self.homeConfigurations.${system}.walkah.activationPackage;
 
+          checks = {
+            pre-commit-check = pre-commit-hooks.lib.${system}.run {
+              src = ./.;
+              hooks = {
+                deadnix.enable = true;
+                nixpkgs-fmt.enable = true;
+                statix.enable = true;
+              };
+            };
+          };
+
+
           devShells.default = pkgs.mkShell {
             name = "dotfiles";
             buildInputs = with pkgs; [
+              deadnix
               nil
               nixpkgs-fmt
+              statix
             ];
+
+            inherit (self.checks.${system}.pre-commit-check) shellHook;
           };
         });
 }