diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..44610e5
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake;
diff --git a/.gitignore b/.gitignore
index 9448a835..726d2d6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,2 @@
 result
-
-
+.direnv
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..de6e0e3
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,20 @@
+default_install_hook_types:
+  - pre-commit
+  - commit-msg
+
+repos:
+  - repo: https://github.com/gitleaks/gitleaks
+    rev: v8.18.2
+    hooks:
+      - id: gitleaks
+        stages: [commit]
+
+  - repo: local
+    hooks:
+      - id: nixpkgs-fmt
+        name: Check formatting
+        entry: nixfmt
+        language: system
+        files: .*\.nix$
+        args: [-c]
+        stages: [commit]
diff --git a/flake.nix b/flake.nix
index 3fd7889..a56642a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -40,6 +40,15 @@
         };
       };
 
+      devShell."${system}" = pkgs.mkShell {
+        buildInputs = with pkgs; [
+          pre-commit
+          nixfmt-rfc-style
+        ];
+        shellHook = ''
+          ${pkgs.pre-commit}/bin/pre-commit install -f
+        '';
+      };
       templates = import ./templates;
     };
 }
diff --git a/modules/system/mime.nix b/modules/system/mime.nix
index e69de29..ffcd441 100644
--- a/modules/system/mime.nix
+++ b/modules/system/mime.nix
@@ -0,0 +1 @@
+{ }