feat: set up git hooks

Flake lock file updates:

• Updated input 'firefox-addons':
    'gitlab:rycee/nur-expressions/4f827ff035c6ddc58d04c45abe5b777d356b926a?dir=pkgs/firefox-addons&narHash=sha256-9Sqq/hxq8ZDLRSzu%2Bedn0OfWG%2BFAPWFpwMKaJobeLec%3D' (2026-02-03)
  → 'gitlab:rycee/nur-expressions/c7794d3f46304de5234008c31b5b28a9d5709184?dir=pkgs/firefox-addons&narHash=sha256-0iGDl/ct3rW%2Bh6%2BsLq4RZaze/U/aQo2L5sLLuyjuVTk%3D' (2026-02-04)
• Updated input 'home-manager':
    'github:nix-community/home-manager/984708c34d3495a518e6ab6b8633469bbca2f77a?narHash=sha256-gj1yP3spUb1vGtaF5qPhshd2j0cg4xf51pklDsIm19Q%3D' (2026-02-01)
  → 'github:nix-community/home-manager/04e5203db66417d548ae1ff188a9f591836dfaa7?narHash=sha256-R1WFtIvp38hS9x63dnijdJw1KyIiy30KGea6e6N7LHs%3D' (2026-02-05)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/cb369ef2efd432b3cdf8622b0ffc0a97a02f3137?narHash=sha256-VKS4ZLNx4PNrABoB0L8KUpc1fE7CLpQXQs985tGfaCU%3D' (2026-02-02)
  → 'github:nixos/nixpkgs/00c21e4c93d963c50d4c0c89bfa84ed6e0694df2?narHash=sha256-AYqlWrX09%2BHvGs8zM6ebZ1pwUqjkfpnv8mewYwAo%2BiM%3D' (2026-02-04)
• Updated input 'nvim':
    'path:./dots/.config/nvim'
  → 'path:./dots/.config/nvim'
• Updated input 'sops-nix':
    'github:Mic92/sops-nix/f990b0a334e96d3ef9ca09d4bd92778b42fd84f9?narHash=sha256-NUVGVtYBTC96WhPh4Y3SVM7vf0o1z5W4uqRBn9v1pfo%3D' (2026-02-03)
  → 'github:Mic92/sops-nix/17eea6f3816ba6568b8c81db8a4e6ca438b30b7c?narHash=sha256-ktjWTq%2BD5MTXQcL9N6cDZXUf9kX8JBLLBLT0ZyOTSYY%3D' (2026-02-03)

.gitignore

@@ -8,3 +8,5 @@ result
 result-*
 
 nixos-efi-vars.fd
+
+/.pre-commit-config.yaml

flake.lock

@@ -53,11 +53,11 @@
       },
       "locked": {
         "dir": "pkgs/firefox-addons",
-        "lastModified": 1770091431,
-        "narHash": "sha256-9Sqq/hxq8ZDLRSzu+edn0OfWG+FAPWFpwMKaJobeLec=",
+        "lastModified": 1770177820,
+        "narHash": "sha256-0iGDl/ct3rW+h6+sLq4RZaze/U/aQo2L5sLLuyjuVTk=",
         "owner": "rycee",
         "repo": "nur-expressions",
-        "rev": "4f827ff035c6ddc58d04c45abe5b777d356b926a",
+        "rev": "c7794d3f46304de5234008c31b5b28a9d5709184",
         "type": "gitlab"
       },
       "original": {
@@ -83,6 +83,22 @@
         "type": "github"
       }
     },
+    "flake-compat_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1767039857,
+        "narHash": "sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns=",
+        "owner": "NixOS",
+        "repo": "flake-compat",
+        "rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "flake-parts": {
       "inputs": {
         "nixpkgs-lib": [
@@ -138,6 +154,49 @@
         "type": "github"
       }
     },
+    "git-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1769939035,
+        "narHash": "sha256-Fok2AmefgVA0+eprw2NDwqKkPGEI5wvR+twiZagBvrg=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "a8ca480175326551d6c4121498316261cbb5b260",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
+    "gitignore": {
+      "inputs": {
+        "nixpkgs": [
+          "git-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": [
@@ -145,11 +204,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1769978395,
-        "narHash": "sha256-gj1yP3spUb1vGtaF5qPhshd2j0cg4xf51pklDsIm19Q=",
+        "lastModified": 1770263241,
+        "narHash": "sha256-R1WFtIvp38hS9x63dnijdJw1KyIiy30KGea6e6N7LHs=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "984708c34d3495a518e6ab6b8633469bbca2f77a",
+        "rev": "04e5203db66417d548ae1ff188a9f591836dfaa7",
         "type": "github"
       },
       "original": {
@@ -321,11 +380,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1770019141,
-        "narHash": "sha256-VKS4ZLNx4PNrABoB0L8KUpc1fE7CLpQXQs985tGfaCU=",
+        "lastModified": 1770197578,
+        "narHash": "sha256-AYqlWrX09+HvGs8zM6ebZ1pwUqjkfpnv8mewYwAo+iM=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "cb369ef2efd432b3cdf8622b0ffc0a97a02f3137",
+        "rev": "00c21e4c93d963c50d4c0c89bfa84ed6e0694df2",
         "type": "github"
       },
       "original": {
@@ -579,6 +638,7 @@
         "colmena": "colmena",
         "disko": "disko",
         "firefox-addons": "firefox-addons",
+        "git-hooks": "git-hooks",
         "home-manager": "home-manager",
         "nix-on-droid": "nix-on-droid",
         "nix-secrets": "nix-secrets",
@@ -612,11 +672,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1770110318,
-        "narHash": "sha256-NUVGVtYBTC96WhPh4Y3SVM7vf0o1z5W4uqRBn9v1pfo=",
+        "lastModified": 1770145881,
+        "narHash": "sha256-ktjWTq+D5MTXQcL9N6cDZXUf9kX8JBLLBLT0ZyOTSYY=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "f990b0a334e96d3ef9ca09d4bd92778b42fd84f9",
+        "rev": "17eea6f3816ba6568b8c81db8a4e6ca438b30b7c",
         "type": "github"
       },
       "original": {

flake.nix

@@ -43,6 +43,10 @@
       url = "github:zhaofengli/colmena";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    git-hooks = {
+      url = "github:cachix/git-hooks.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
@@ -52,6 +56,7 @@
       home-manager,
       nix-on-droid,
       nixgl,
+      git-hooks,
       ...
     }@inputs:
     let
@@ -61,6 +66,10 @@
       hostDirNames = utils.dirNames ./hosts;
       system = "x86_64-linux";
       dotsPath = ./dots;
+      gitHooks = import ./git-hooks.nix {
+        inherit nixpkgs git-hooks system;
+        src = ./.;
+      };
     in
     {
       nix.nixPath = [
@@ -128,6 +137,10 @@
           ;
       };
 
+      checks.${system} = gitHooks.checks;
+      formatter.${system} = gitHooks.formatter;
+      devShells.${system} = gitHooks.devShells;
+
       images.sd-image-aarch64 = self.nixosConfigurations.sd-image-aarch64.config.system.build.sdImage;
     };
 }

git-hooks.nix

@@ -0,0 +1,44 @@
+{
+  nixpkgs,
+  git-hooks,
+  system,
+  src,
+}:
+let
+  pkgs = nixpkgs.legacyPackages.${system};
+
+  pre-commit-check = git-hooks.lib.${system}.run {
+    inherit src;
+    hooks = {
+      nixfmt.enable = true;
+      statix.enable = true;
+      deadnix.enable = true;
+    };
+  };
+in
+{
+  checks = {
+    inherit pre-commit-check;
+  };
+
+  formatter =
+    let
+      inherit (pre-commit-check) config;
+      inherit (config) package configFile;
+      script = ''
+        ${pkgs.lib.getExe package} run --all-files --config ${configFile}
+      '';
+    in
+    pkgs.writeShellScriptBin "pre-commit-run" script;
+
+  devShells = {
+    default =
+      let
+        inherit (pre-commit-check) shellHook enabledPackages;
+      in
+      pkgs.mkShell {
+        inherit shellHook;
+        buildInputs = enabledPackages;
+      };
+  };
+}

home/modules/desktop/niri/default.nix

@@ -11,6 +11,7 @@
   home = {
     file.".config/niri/config.kdl".source = ./config.kdl;
     packages = with pkgs; [
+      brightnessctl
       wl-clipboard
       wlsunset
     ];

home/modules/git/default.nix

@@ -21,6 +21,6 @@
     };
 
     programs.gh.enable = config.github.enable;
-    home.packages = with pkgs; lib.optionals (config.gitlab.enable) [ glab ];
+    home.packages = lib.optionals config.gitlab.enable [ pkgs.glab ];
   };
 }

home/modules/nfc/proxmark3.nix

@@ -15,7 +15,7 @@ in
 
   config = lib.mkIf cfg.enable {
     home.packages = [
-      pkgs.proxmark3
+      (pkgs.proxmark3.override { withGeneric = true; })
     ];
   };
 }

home/modules/ssh.nix

@@ -18,20 +18,25 @@ in
     enable = true;
     enableDefaultConfig = false;
 
-    matchBlocks = lib.genAttrs hostsWithKeys (
+    matchBlocks =
+      lib.genAttrs hostsWithKeys (
         hostname:
         let
           hostConfig = outputs.nixosConfigurations.${hostname}.config;
-        publicHostname = hostConfig.ssh.publicHostname;
-        targetUser = hostConfig.ssh.username;
+          inherit (hostConfig.ssh) publicHostname username;
         in
         {
           host = hostname;
-        user = targetUser;
+          user = username;
         }
         // lib.optionalAttrs (publicHostname != "") {
           hostname = publicHostname;
         }
-    );
+      )
+      // {
+        "*" = {
+          addKeysToAgent = "yes";
+        };
+      };
   };
 }

hosts/astyanax/default.nix

@@ -40,6 +40,7 @@ in
     (import ../../modules/secrets { inherit lib inputs config; })
     ../../modules/docker
     ../../modules/syncthing
+    ../../modules/nfc
   ];
 
   home-manager.users.${username} = import ../../home/hosts/astyanax {
@@ -58,6 +59,7 @@ in
 
   secrets.username = username;
   docker.user = username;
+  nfc.user = username;
 
   nix.settings.secret-key-files = [ config.sops.secrets.nix_signing_key_astyanax.path ];
 

hosts/eetion/default.nix

@@ -13,27 +13,33 @@ in
     ../../modules/ssh/hardened-openssh.nix
   ];
 
-  ssh.username = username;
-  ssh.publicHostname = "eetion";
-  ssh.authorizedHosts = [
+  ssh = {
+    inherit username;
+    publicHostname = "eetion";
+    authorizedHosts = [
       "andromache"
       "astyanax"
     ];
+  };
 
   boot.loader = {
     grub.enable = false;
     generic-extlinux-compatible.enable = true;
   };
 
-  networking.hostName = hostName;
-  networking.networkmanager.enable = true;
-  networking.firewall = {
+  networking = {
+    inherit hostName;
+    networkmanager.enable = true;
+    firewall = {
       enable = true;
       allowedTCPPorts = [
         80
         443
       ];
     };
+  };
+
+  boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
 
   users.users = {
     root.hashedPassword = "!";
@@ -45,14 +51,13 @@ in
 
   security.sudo.wheelNeedsPassword = false;
 
-  services.openssh = {
+  services = {
+    openssh = {
       enable = true;
       harden = true;
     };
 
-  environment.etc."paperless-admin-pass".text = "admin";
-
-  services.paperless = {
+    paperless = {
       enable = true;
       passwordFile = "/etc/paperless-admin-pass";
       settings = {
@@ -69,7 +74,7 @@ in
     # host: paperless
     # domain: eetion
     # ip address: <eetion-ip>
-  services.nginx = {
+    nginx = {
       enable = true;
       recommendedGzipSettings = true;
       recommendedOptimisation = true;
@@ -90,6 +95,9 @@ in
         };
       };
     };
+  };
+
+  environment.etc."paperless-admin-pass".text = "admin";
 
   virtualisation = {
     podman.enable = true;

hosts/eetion/hard.nix

@@ -5,10 +5,12 @@
     (modulesPath + "/installer/scan/not-detected.nix")
   ];
 
-  boot.initrd.availableKernelModules = [ ];
-  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ ];
-  boot.extraModulePackages = [ ];
+  boot = {
+    initrd.availableKernelModules = [ ];
+    initrd.kernelModules = [ ];
+    kernelModules = [ ];
+    extraModulePackages = [ ];
+  };
 
   fileSystems."/" = {
     device = "/dev/disk/by-label/NIXOS_SD";

hosts/hecuba/default.nix

@@ -1,8 +1,5 @@
 {
-  lib,
   inputs,
-  outputs,
-  config,
   pkgs,
   ...
 }:
@@ -23,12 +20,14 @@ in
   ];
 
   networking.hostName = hostName;
-  ssh.username = username;
-  ssh.publicHostname = "server.hektormisplon.xyz";
-  ssh.authorizedHosts = [
+  ssh = {
+    inherit username;
+    publicHostname = "server.hektormisplon.xyz";
+    authorizedHosts = [
       "andromache"
       "astyanax"
     ];
+  };
 
   docker.user = username;
 

modules/backups/default.nix

@@ -28,23 +28,25 @@ in
   };
 
   config = {
-    sops.secrets.b2_bucket_name = { };
+    sops = {
+      secrets.b2_bucket_name = { };
 
-    sops.templates."restic/repo-${config.networking.hostName}" = {
+      templates."restic/repo-${config.networking.hostName}" = {
         content = "b2:${config.sops.placeholder."b2_bucket_name"}:${config.networking.hostName}";
       };
 
-    sops.templates."restic/b2-env-${config.networking.hostName}" = {
+      templates."restic/b2-env-${config.networking.hostName}" = {
         content = ''
           B2_ACCOUNT_ID=${config.sops.placeholder."b2_account_id"}
           B2_ACCOUNT_KEY=${config.sops.placeholder."b2_account_key"}
         '';
       };
+    };
 
     services.restic.backups.home = {
       repositoryFile = config.sops.templates."restic/repo-${config.networking.hostName}".path;
-      passwordFile = cfg.passwordFile;
-      paths = cfg.paths;
+      inherit (cfg) passwordFile;
+      inherit (cfg) paths;
       timerConfig = {
         OnCalendar = "daily";
         Persistent = true;

modules/nfc/default.nix

@@ -0,0 +1,16 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.nfc;
+in
+{
+  options.nfc = {
+    user = lib.mkOption {
+      type = lib.types.nullOr lib.types.str;
+      default = null;
+    };
+  };
+  config = lib.mkIf (cfg.user != null) {
+    users.users.${cfg.user}.extraGroups = [ "dialout" ];
+  };
+}