Bump dependencies.

.envrc

@@ -1 +1,2 @@
+use flake
 export BASH_DEFAULT_TIMEOUT_MS=100000000

.gitignore

@@ -1,2 +1,4 @@
 *.iso
 result
+/.pre-commit-config.yaml
+.direnv

flake.lock

@@ -60,6 +60,22 @@
       }
     },
     "flake-compat": {
+      "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-compat_2": {
       "flake": false,
       "locked": {
         "lastModified": 1747046372,
@@ -76,12 +92,34 @@
       }
     },
     "git-hooks": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "gitignore": "gitignore",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1750779888,
+        "narHash": "sha256-wibppH3g/E2lxU43ZQHC5yA/7kIKLGxVEnsnVK1BtRg=",
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "rev": "16ec914f6fb6f599ce988427d9d94efddf25fe6d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "git-hooks.nix",
+        "type": "github"
+      }
+    },
+    "git-hooks_2": {
       "inputs": {
         "flake-compat": [
           "simple-nixos-mailserver",
           "flake-compat"
         ],
-        "gitignore": "gitignore",
+        "gitignore": "gitignore_2",
         "nixpkgs": [
           "simple-nixos-mailserver",
           "nixpkgs"
@@ -102,6 +140,27 @@
       }
     },
     "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"
+      }
+    },
+    "gitignore_2": {
       "inputs": {
         "nixpkgs": [
           "simple-nixos-mailserver",
@@ -151,11 +210,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1752544374,
-        "narHash": "sha256-ReX0NG6nIAEtQQjLqeu1vUU2jjZuMlpymNtb4VQYeus=",
+        "lastModified": 1752780124,
+        "narHash": "sha256-5dn97vIYxn6VozKePOQSDxVCsrl38nDdMJXx86KIJH0=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "2e00ed310c218127e02ffcf28ddd4e0f669fde3e",
+        "rev": "c718918222bdb104397762dea67e6b397a7927fe",
         "type": "github"
       },
       "original": {
@@ -167,11 +226,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1752048960,
-        "narHash": "sha256-gATnkOe37eeVwKKYCsL+OnS2gU4MmLuZFzzWCtaKLI8=",
+        "lastModified": 1752666637,
+        "narHash": "sha256-P8J72psdc/rWliIvp8jUpoQ6qRDlVzgSDDlgkaXQ0Fw=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "7ced9122cff2163c6a0212b8d1ec8c33a1660806",
+        "rev": "d1bfa8f6ccfb5c383e1eba609c1eb67ca24ed153",
         "type": "github"
       },
       "original": {
@@ -215,11 +274,11 @@
     },
     "nixpkgsUnstable": {
       "locked": {
-        "lastModified": 1752480373,
-        "narHash": "sha256-JHQbm+OcGp32wAsXTE/FLYGNpb+4GLi5oTvCxwSoBOA=",
+        "lastModified": 1752687322,
+        "narHash": "sha256-RKwfXA4OZROjBTQAl9WOZQFm7L8Bo93FQwSJpAiSRvo=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "62e0f05ede1da0d54515d4ea8ce9c733f12d9f08",
+        "rev": "6e987485eb2c77e5dcc5af4e3c70843711ef9251",
         "type": "github"
       },
       "original": {
@@ -231,11 +290,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1752436162,
-        "narHash": "sha256-Kt1UIPi7kZqkSc5HVj6UY5YLHHEzPBkgpNUByuyxtlw=",
+        "lastModified": 1752620740,
+        "narHash": "sha256-f3pO+9lg66mV7IMmmIqG4PL3223TYMlnlw+pnpelbss=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "dfcd5b901dbab46c9c6e80b265648481aafb01f8",
+        "rev": "32a4e87942101f1c9f9865e04dc3ddb175f5f32e",
         "type": "github"
       },
       "original": {
@@ -264,6 +323,7 @@
     "root": {
       "inputs": {
         "agenix": "agenix",
+        "git-hooks": "git-hooks",
         "home-manager": "home-manager_2",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs_2",
@@ -274,8 +334,8 @@
     "simple-nixos-mailserver": {
       "inputs": {
         "blobs": "blobs",
-        "flake-compat": "flake-compat",
-        "git-hooks": "git-hooks",
+        "flake-compat": "flake-compat_2",
+        "git-hooks": "git-hooks_2",
         "nixpkgs": "nixpkgs_3",
         "nixpkgs-25_05": "nixpkgs-25_05"
       },

flake.nix

@@ -9,6 +9,10 @@
     };
     agenix.url = "github:ryantm/agenix";
     simple-nixos-mailserver.url = "gitlab:simple-nixos-mailserver/nixos-mailserver/nixos-25.05";
+    git-hooks = {
+      url = "github:cachix/git-hooks.nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
@@ -19,103 +23,107 @@
       nixos-hardware,
       agenix,
       simple-nixos-mailserver,
+      git-hooks,
       ...
     }:
     let
       system = "x86_64-linux";
-      overlayUnstable = final: prev: {
+      overlayUnstable = _final: _prev: {
         unstable = import nixpkgsUnstable {
           inherit system;
           config.allowUnfree = true;
           config.android_sdk.accept_license = true;
         };
       };
+
+      # Common modules shared across all hosts
+      commonModules = [
+        agenix.nixosModules.default
+        {
+          environment.systemPackages = [ agenix.packages.${system}.default ];
+        }
+        {
+          nixpkgs.overlays = [ overlayUnstable ];
+        }
+      ];
+
+      # Common home-manager modules
+      homeManagerModules = [
+        home-manager.nixosModules.home-manager
+        {
+          home-manager.useGlobalPkgs = true;
+          home-manager.useUserPackages = true;
+        }
+      ];
+
+      # Helper function to create a host configuration
+      mkHost =
+        {
+          hostPath,
+          extraModules ? [ ],
+          includeHomeManager ? true,
+          specialArgs ? { },
+        }:
+        nixpkgs.lib.nixosSystem {
+          inherit system specialArgs;
+          modules =
+            commonModules
+            ++ (if includeHomeManager then homeManagerModules else [ ])
+            ++ extraModules
+            ++ [ hostPath ];
+        };
     in
-    {
+    rec {
       nixosConfigurations = {
-        nixbox = nixpkgs.lib.nixosSystem {
-          inherit system;
-          modules = [
-            agenix.nixosModules.default
-            {
-              environment.systemPackages = [ agenix.packages.${system}.default ];
-            }
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = [ overlayUnstable ];
-              }
-            )
-            home-manager.nixosModules.home-manager
-            {
-              home-manager.useGlobalPkgs = true;
-              home-manager.useUserPackages = true;
-            }
-            ./hosts/nixbox
-          ];
+        nixbox = mkHost {
+          hostPath = ./hosts/nixbox;
         };
-        flynode = nixpkgs.lib.nixosSystem {
-          inherit system;
-          modules = [
-            agenix.nixosModules.default
-            {
-              environment.systemPackages = [ agenix.packages.${system}.default ];
-            }
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = [ overlayUnstable ];
-              }
-            )
-            nixos-hardware.nixosModules.lenovo-thinkpad-z13-gen1
-            home-manager.nixosModules.home-manager
-            {
-              home-manager.useGlobalPkgs = true;
-              home-manager.useUserPackages = true;
-            }
-            ./hosts/flynode
-          ];
+
+        flynode = mkHost {
+          hostPath = ./hosts/flynode;
+          extraModules = [ nixos-hardware.nixosModules.lenovo-thinkpad-z13-gen1 ];
         };
-        thewordnerd = nixpkgs.lib.nixosSystem {
-          inherit system;
+
+        thewordnerd = mkHost {
+          hostPath = ./hosts/hub;
+          extraModules = [ simple-nixos-mailserver.nixosModule ];
           specialArgs = { inherit inputs; };
-          modules = [
-            agenix.nixosModules.default
-            {
-              environment.systemPackages = [ agenix.packages.${system}.default ];
-            }
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = [ overlayUnstable ];
-              }
-            )
-            home-manager.nixosModules.home-manager
-            {
-              home-manager.useGlobalPkgs = true;
-              home-manager.useUserPackages = true;
-            }
-            simple-nixos-mailserver.nixosModule
-            ./hosts/hub
-          ];
         };
-        garden = nixpkgs.lib.nixosSystem {
-          inherit system;
+
+        garden = mkHost {
+          hostPath = ./hosts/garden;
+          includeHomeManager = false;
           specialArgs = { inherit inputs; };
-          modules = [
-            agenix.nixosModules.default
-            {
-              environment.systemPackages = [ agenix.packages.${system}.default ];
-            }
-            (
-              { config, pkgs, ... }:
-              {
-                nixpkgs.overlays = [ overlayUnstable ];
-              }
-            )
-            ./hosts/garden
-          ];
         };
       };
+
+      checks.${system} = {
+        pre-commit-check = git-hooks.lib.${system}.run {
+          src = ./.;
+          hooks = {
+            # Check formatting of flake.nix
+            nixfmt-rfc-style = {
+              enable = true;
+              files = "^flake\\.nix$";
+            };
+            # Check for dead code in flake.nix
+            deadnix = {
+              enable = true;
+              files = "^flake\\.nix$";
+            };
+            # Flake-specific checks
+            flake-checker.enable = true;
+          };
+        };
+      };
+
+      devShells.${system}.default =
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+        in
+        pkgs.mkShell {
+          inherit (checks.${system}.pre-commit-check) shellHook;
+          buildInputs = checks.${system}.pre-commit-check.enabledPackages;
+        };
     };
 }

hosts/flynode/hardware-configuration.nix

@@ -1,46 +1,61 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
 
 {
-  imports =
-    [ (modulesPath + "/installer/scan/not-detected.nix")
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
   ];
 
-  boot.initrd.availableKernelModules = [ "nvme" "xhci_pci" "thunderbolt" "usb_storage" "sd_mod" ];
+  boot.initrd.availableKernelModules = [
+    "nvme"
+    "xhci_pci"
+    "thunderbolt"
+    "usb_storage"
+    "sd_mod"
+  ];
   boot.initrd.kernelModules = [ ];
   boot.kernelModules = [ "kvm-amd" ];
   boot.extraModulePackages = [ ];
 
-  fileSystems."/" =
-    { device = "zpool/root";
+  fileSystems."/" = {
+    device = "zpool/root";
     fsType = "zfs";
   };
 
-  fileSystems."/home" =
-    { device = "zpool/home";
+  fileSystems."/home" = {
+    device = "zpool/home";
     fsType = "zfs";
   };
 
-  fileSystems."/var" =
-    { device = "zpool/var";
+  fileSystems."/var" = {
+    device = "zpool/var";
     fsType = "zfs";
   };
 
-  fileSystems."/nix" =
-    { device = "zpool/nix";
+  fileSystems."/nix" = {
+    device = "zpool/nix";
     fsType = "zfs";
   };
 
-  fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/001D-B2B7";
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-uuid/001D-B2B7";
     fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
+    options = [
+      "fmask=0022"
+      "dmask=0022"
+    ];
   };
 
-  swapDevices =
-    [ { device = "/dev/disk/by-uuid/c9a2faf8-4e35-4946-a70f-c84d0fa359df"; }
+  swapDevices = [
+    { device = "/dev/disk/by-uuid/c9a2faf8-4e35-4946-a70f-c84d0fa359df"; }
   ];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking

hosts/garden/hardware-configuration.nix

@@ -6,9 +6,20 @@
     efiInstallAsRemovable = true;
     device = "nodev";
   };
-  fileSystems."/boot" = { device = "/dev/disk/by-uuid/FAAB-A09E"; fsType = "vfat"; };
-  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "xen_blkfront" "vmw_pvscsi" ];
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-uuid/FAAB-A09E";
+    fsType = "vfat";
+  };
+  boot.initrd.availableKernelModules = [
+    "ata_piix"
+    "uhci_hcd"
+    "xen_blkfront"
+    "vmw_pvscsi"
+  ];
   boot.initrd.kernelModules = [ "nvme" ];
-  fileSystems."/" = { device = "/dev/sda1"; fsType = "ext4"; };
+  fileSystems."/" = {
+    device = "/dev/sda1";
+    fsType = "ext4";
+  };
 
 }

hosts/hub/hardware-configuration.nix

@@ -1,42 +1,55 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
 
 {
-  imports =
-    [ (modulesPath + "/installer/scan/not-detected.nix")
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
   ];
 
-  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" ];
+  boot.initrd.availableKernelModules = [
+    "xhci_pci"
+    "ahci"
+    "nvme"
+  ];
   boot.initrd.kernelModules = [ ];
   boot.kernelModules = [ "kvm-intel" ];
   boot.extraModulePackages = [ ];
 
-  fileSystems."/" =
-    { device = "zpool/root";
+  fileSystems."/" = {
+    device = "zpool/root";
     fsType = "zfs";
   };
 
-  fileSystems."/nix" =
-    { device = "zpool/nix";
+  fileSystems."/nix" = {
+    device = "zpool/nix";
     fsType = "zfs";
   };
 
-  fileSystems."/var" =
-    { device = "zpool/var";
+  fileSystems."/var" = {
+    device = "zpool/var";
     fsType = "zfs";
   };
 
-  fileSystems."/home" =
-    { device = "zpool/home";
+  fileSystems."/home" = {
+    device = "zpool/home";
     fsType = "zfs";
   };
 
-  fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/8ADD-D5B1";
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-uuid/8ADD-D5B1";
     fsType = "vfat";
-      options = [ "fmask=0022" "dmask=0022" ];
+    options = [
+      "fmask=0022"
+      "dmask=0022"
+    ];
   };
 
   swapDevices = [ ];

hosts/nixbox/hardware-configuration.nix

@@ -1,27 +1,45 @@
 # Do not modify this file!  It was generated by ‘nixos-generate-config’
 # and may be overwritten by future invocations.  Please make changes
 # to /etc/nixos/configuration.nix instead.
-{ config, lib, pkgs, modulesPath, ... }:
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
 
 {
-  imports =
-    [ (modulesPath + "/installer/scan/not-detected.nix")
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
   ];
 
-  boot.initrd.availableKernelModules = [ "xhci_pci" "thunderbolt" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod" "sdhci_pci" ];
+  boot.initrd.availableKernelModules = [
+    "xhci_pci"
+    "thunderbolt"
+    "ahci"
+    "nvme"
+    "usbhid"
+    "usb_storage"
+    "sd_mod"
+    "sdhci_pci"
+  ];
   boot.initrd.kernelModules = [ ];
   boot.kernelModules = [ "kvm-intel" ];
   boot.extraModulePackages = [ ];
 
-  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/a0df6959-f878-48d0-aabe-5f46915c1921";
+  fileSystems."/" = {
+    device = "/dev/disk/by-uuid/a0df6959-f878-48d0-aabe-5f46915c1921";
     fsType = "ext4";
   };
 
-  fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/7EEE-698D";
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-uuid/7EEE-698D";
     fsType = "vfat";
-      options = [ "fmask=0077" "dmask=0077" ];
+    options = [
+      "fmask=0077"
+      "dmask=0077"
+    ];
   };
 
   swapDevices = [ ];