test

flake.lock

@@ -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": [
@@ -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",

flake.nix

@@ -43,16 +43,20 @@
       url = "github:zhaofengli/colmena";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    git-hooks = {
+      url = "github:cachix/git-hooks.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
-    {
+    { self
-      self,
+    , nixpkgs
-      nixpkgs,
+    , home-manager
-      home-manager,
+    , nix-on-droid
-      nix-on-droid,
+    , nixgl
-      nixgl,
+    , git-hooks
-      ...
+    , ...
     }@inputs:
     let
       inherit (self) outputs;
@@ -73,7 +77,12 @@
             system = import ./hosts/${host}/system.nix;
             modules = [ ./hosts/${host} ];
             specialArgs = {
-              inherit inputs outputs dotsPath;
+              inherit
+                inputs
+                outputs
+                dotsPath
+                self
+                ;
             };
           }
         ))
@@ -128,6 +137,33 @@
           ;
       };
 
+      checks.${system}.pre-commit-check = git-hooks.lib.${system}.run {
+        src = ./.;
+        hooks = {
+          nixpkgs-fmt.enable = true;
+          statix.enable = true;
+        };
+      };
+
+      apps.${system}.pre-commit-install =
+        let
+          hooks = git-hooks.lib.${system}.run {
+            src = ./.;
+            hooks = {
+              nixpkgs-fmt.enable = true;
+              statix.enable = true;
+            };
+          };
+        in
+        {
+          type = "app";
+          program = toString (
+            pkgs.writeShellScript "install-hooks" ''
+              ${hooks.shellHook}
+            ''
+          );
+        };
+
       images.sd-image-aarch64 = self.nixosConfigurations.sd-image-aarch64.config.system.build.sdImage;
     };
 }

hosts/andromache/default.nix

@@ -1,10 +1,10 @@
-{
+{ lib
-  lib,
+, inputs
-  inputs,
+, outputs
-  outputs,
+, self
-  config,
+, config
-  pkgs,
+, pkgs
-  ...
+, ...
 }:
 let
   username = "h";
@@ -38,6 +38,7 @@ in
     (import ../../modules/secrets { inherit lib inputs config; })
     ../../modules/docker
     ../../modules/syncthing
+    ../../modules/git-hooks
   ];
 
   home-manager.users.${username} = import ../../home/hosts/andromache {
@@ -99,6 +100,11 @@ in
   ];
 
   services = {
+    git-hooks = {
+      enable = true;
+      flake-path = self;
+    };
+
     xserver = {
       videoDrivers = [ "nvidia" ];
     };

hosts/astyanax/default.nix

@@ -1,10 +1,10 @@
-{
+{ lib
-  lib,
+, inputs
-  inputs,
+, outputs
-  outputs,
+, self
-  config,
+, config
-  pkgs,
+, pkgs
-  ...
+, ...
 }:
 let
   username = "h";
@@ -40,6 +40,7 @@ in
     (import ../../modules/secrets { inherit lib inputs config; })
     ../../modules/docker
     ../../modules/syncthing
+    ../../modules/git-hooks
   ];
 
   home-manager.users.${username} = import ../../home/hosts/astyanax {
@@ -97,6 +98,10 @@ in
   boot.binfmt.emulatedSystems = [ "aarch64-linux" ];
 
   services = {
+    git-hooks = {
+      enable = true;
+      flake-path = self;
+    };
     fwupd.enable = true;
     openssh = {
       enable = true;

modules/git-hooks/default.nix

@@ -0,0 +1,22 @@
+{ config, lib, ... }:
+
+{
+  options.services.git-hooks = {
+    enable = lib.mkEnableOption "Install git hooks for Nix flake";
+    flake-path = lib.mkOption {
+      type = lib.types.path;
+      description = "Path to Nix flake repository";
+    };
+  };
+
+  config = lib.mkIf config.services.git-hooks.enable {
+    system.activationScripts.git-hooks = lib.stringAfter [ "users" ] ''
+      if [ -d "${config.services.git-hooks.flake-path}/.git" ]; then
+        echo "🪝 Installing git hooks..."
+        cd ${config.services.git-hooks.flake-path}
+        nix run .#apps.x86_64-linux.pre-commit-install || true
+        echo "✅ Done"
+      fi
+    '';
+  };
+}