Add formatter and pre-commit hooks

flake.lock

@@ -182,6 +182,22 @@
         "url": "https://flakehub.com/f/edolstra/flake-compat/1.tar.gz"
       }
     },
+    "flake-compat_4": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "flake-parts": {
       "inputs": {
         "nixpkgs-lib": [
@@ -286,6 +302,27 @@
         "type": "github"
       }
     },
+    "gitignore_2": {
+      "inputs": {
+        "nixpkgs": [
+          "pre-commit-hooks",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1709087332,
+        "narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "gitignore.nix",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -605,6 +642,28 @@
         "type": "github"
       }
     },
+    "pre-commit-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat_4",
+        "gitignore": "gitignore_2",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1737043064,
+        "narHash": "sha256-I/OuxGwXwRi5gnFPsyCvVR+IfFstA+QXEpHu1hvsgD8=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "94ee657f6032d913fe0ef49adaa743804635b0bb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "agenix": "agenix",
@@ -620,6 +679,7 @@
         "nixpkgs-unstable": "nixpkgs-unstable",
         "nixvim": "nixvim",
         "plasma-manager": "plasma-manager",
+        "pre-commit-hooks": "pre-commit-hooks",
         "secrets": "secrets",
         "thunderbird-gnome-theme": "thunderbird-gnome-theme"
       }

flake.nix

@@ -41,6 +41,10 @@
       inputs.nixpkgs.follows = "nixpkgs";
       inputs.home-manager.follows = "home-manager";
     };
+    pre-commit-hooks = {
+      url = "github:cachix/git-hooks.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     secrets = {
       url = "git+ssh://git@git.vimium.com/jordan/nix-secrets.git";
       flake = false;
@@ -101,6 +105,8 @@
           }))
       ];
 
+      formatter = forEachSystem (system: nixpkgs.legacyPackages.${system}.nixfmt-rfc-style);
+
       devShells.x86_64-linux.default = nixpkgs.legacyPackages.x86_64-linux.mkShell {
         buildInputs = [
           inputs.agenix.packages.x86_64-linux.agenix