diff --git a/flake.lock b/flake.lock
index 5cb73b1..019b647 100644
--- a/flake.lock
+++ b/flake.lock
@@ -1,23 +1,5 @@
 {
   "nodes": {
-    "flake-utils": {
-      "inputs": {
-        "systems": "systems"
-      },
-      "locked": {
-        "lastModified": 1710146030,
-        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1711681563,
@@ -36,24 +18,8 @@
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs"
       }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 23dc9bd..c961bf6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,22 +1,34 @@
 {
   description = "Hugo website";
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
-  inputs.flake-utils.url = "github:numtide/flake-utils";
 
   outputs =
-    { nixpkgs, flake-utils, ... }:
-    flake-utils.lib.eachDefaultSystem (
-      system:
-      let
-        pkgs = nixpkgs.legacyPackages.${system};
-      in
-      {
-        devShells.default = pkgs.mkShell {
-          packages = [
-            pkgs.go
-            pkgs.hugo
-          ];
+    { nixpkgs, ... }:
+    let
+      systems = [
+        "x86_64-linux"
+        "x86_64-darwin"
+      ];
+      forAllSystems = f: nixpkgs.lib.genAttrs (systems) f;
+
+      devShell =
+        system:
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+        in
+        {
+          default =
+            with pkgs;
+            mkShell {
+              nativeBuildInputs = with pkgs; [
+                go
+                hugo
+              ];
+            };
         };
-      }
-    );
+    in
+    {
+      devShells = forAllSystems devShell;
+      formatter.x86_64-darwin = nixpkgs.legacyPackages.x86_64-darwin.nixfmt-rfc-style;
+    };
 }