diff --git a/flake.nix b/flake.nix
index 2eb85cd..0647225 100644
--- a/flake.nix
+++ b/flake.nix
@@ -9,57 +9,69 @@
     };
   };
 
-  outputs = inputs @ {
-    self,
-    nixpkgs,
-    nixpkgs-unstable,
-    home-manager,
-    ...
-  }: let
-    inherit (self) outputs;
-    lib = nixpkgs.lib // home-manager.lib;
-    mkHost = {
-      hostname,
-      user ? "sammy",
-    }: {
-      imports = [
-        ./hosts/${hostname}/configuration.nix
-        ./modules/nixos/common.nix
-        (import "${home-manager}/nixos")
+  outputs =
+    inputs @ { self
+    , nixpkgs
+    , nixpkgs-unstable
+    , home-manager
+    , ...
+    }:
+    let
+      inherit (self) outputs;
+      systems = [
+        "aarch64-linux"
+        "i686-linux"
+        "x86_64-linux"
+        "aarch64-darwin"
+        "x86_64-darwin"
       ];
+      forEachSystem = f: lib.genAttrs systems (system: f);
+      forAllSystems = lib.genAttrs systems;
+      lib = nixpkgs.lib // home-manager.lib;
+      mkHost =
+        { hostname
+        , user ? "sammy"
+        ,
+        }: {
+          imports = [
+            ./hosts/${hostname}/configuration.nix
+            ./modules/nixos/common.nix
+            (import "${home-manager}/nixos")
+          ];
 
-      deployment = {
-        targetUser = user;
-        allowLocalDeployment = true;
-      };
-    };
-  in {
-    inherit lib;
-    formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.alejandra;
-    colmena = {
-      meta = {
-        description = "All my NixoS machines";
-        specialArgs = {inherit inputs outputs;};
-        nixpkgs = import nixpkgs {
-          system = "x86_64-linux";
-          overlays = [];
+          deployment = {
+            targetUser = user;
+            allowLocalDeployment = true;
+          };
+        };
+    in
+    {
+      inherit lib;
+      formatter = forAllSystems (system: nixpkgs.legacyPackages.${system}.nixpkgs-fmt);
+      colmena = {
+        meta = {
+          description = "All my NixoS machines";
+          specialArgs = { inherit inputs outputs; };
+          nixpkgs = import nixpkgs {
+            system = "x86_64-linux";
+            overlays = [ ];
+          };
         };
-      };
 
-      bengal = mkHost {hostname = "bengal";};
+        bengal = mkHost { hostname = "bengal"; };
 
-      maine-coon = mkHost {hostname = "maine-coon";};
-    };
-    nixosConfigurations.test = nixpkgs.lib.nixosSystem {
-      system = "x86_64-linux";
-      specialArgs = {
-        flake = self;
+        maine-coon = mkHost { hostname = "maine-coon"; };
+      };
+      nixosConfigurations.test = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        specialArgs = {
+          flake = self;
+        };
+        modules = [
+          ./modules
+          ./hosts/test-vm/configuration.nix
+          (import "${home-manager}/nixos")
+        ];
       };
-      modules = [
-        ./modules
-        ./hosts/test-vm/configuration.nix
-        (import "${home-manager}/nixos")
-      ];
     };
-  };
 }
diff --git a/hosts/bengal/configuration.nix b/hosts/bengal/configuration.nix
index b52b20a..e894862 100644
--- a/hosts/bengal/configuration.nix
+++ b/hosts/bengal/configuration.nix
@@ -1,11 +1,10 @@
 # Edit this configuration file to define what should be installed on
 # your system. Help is available in the configuration.nix(5) man page, on
 # https://search.nixos.org/options and in the NixOS manual (`nixos-help`).
-{
-  config,
-  lib,
-  pkgs,
-  ...
+{ config
+, lib
+, pkgs
+, ...
 }: {
   imports = [
     # Include the results of the hardware scan.
diff --git a/hosts/bengal/hardware-configuration.nix b/hosts/bengal/hardware-configuration.nix
index bf34bd3..19c2716 100644
--- a/hosts/bengal/hardware-configuration.nix
+++ b/hosts/bengal/hardware-configuration.nix
@@ -1,21 +1,20 @@
 # 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")
   ];
 
-  boot.initrd.availableKernelModules = ["xhci_pci" "ahci" "usbhid" "usb_storage" "sd_mod"];
-  boot.initrd.kernelModules = [];
-  boot.kernelModules = ["kvm-amd"];
-  boot.extraModulePackages = [];
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "usbhid" "usb_storage" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
 
   fileSystems."/" = {
     device = "/dev/disk/by-uuid/7a713df7-7027-4ae6-b1a3-839dda62dcbc";
@@ -29,7 +28,7 @@
     fsType = "vfat";
   };
 
-  swapDevices = [{device = "/dev/disk/by-uuid/8cca600e-735e-4486-92e3-01ff6c0b7599";}];
+  swapDevices = [{ device = "/dev/disk/by-uuid/8cca600e-735e-4486-92e3-01ff6c0b7599"; }];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
   # (the default) this is the recommended approach. When using systemd-networkd it's
diff --git a/hosts/maine-coon/configuration.nix b/hosts/maine-coon/configuration.nix
index 8c54f39..d3af4b5 100644
--- a/hosts/maine-coon/configuration.nix
+++ b/hosts/maine-coon/configuration.nix
@@ -1,8 +1,7 @@
-{
-  config,
-  pkgs,
-  lib,
-  ...
+{ config
+, pkgs
+, lib
+, ...
 }: {
   imports = [
     # Include the results of the hardware scan.
@@ -31,7 +30,7 @@
     address = "fe80::1";
     interface = "enp0s31f6";
   };
-  networking.nameservers = ["8.8.8.8"];
+  networking.nameservers = [ "8.8.8.8" ];
 
   # Initial empty root password for easy login:
   services.openssh.permitRootLogin = lib.mkForce "prohibit-password";
diff --git a/hosts/maine-coon/hardware-configuration.nix b/hosts/maine-coon/hardware-configuration.nix
index fd899c3..40d34c4 100644
--- a/hosts/maine-coon/hardware-configuration.nix
+++ b/hosts/maine-coon/hardware-configuration.nix
@@ -1,16 +1,15 @@
 # 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,
-  ...
+{ config
+, lib
+, pkgs
+, ...
 }: {
-  boot.initrd.availableKernelModules = ["ahci" "nvme"];
-  boot.initrd.kernelModules = [];
-  boot.kernelModules = ["kvm-intel"];
-  boot.extraModulePackages = [];
+  boot.initrd.availableKernelModules = [ "ahci" "nvme" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
 
   fileSystems."/" = {
     device = "/dev/nvme0n1p2";
@@ -22,5 +21,5 @@
     fsType = "ext2";
   };
 
-  swapDevices = [];
+  swapDevices = [ ];
 }
diff --git a/hosts/test-vm/configuration.nix b/hosts/test-vm/configuration.nix
index daaf81c..afda8fc 100644
--- a/hosts/test-vm/configuration.nix
+++ b/hosts/test-vm/configuration.nix
@@ -1,17 +1,16 @@
-{
-  config,
-  lib,
-  pkgs,
-  ...
+{ config
+, lib
+, pkgs
+, ...
 }: {
   users.users.admin = {
     isNormalUser = true;
-    extraGroups = ["wheel"];
+    extraGroups = [ "wheel" ];
     password = "admin";
     group = "admin";
   };
 
-  users.groups.admin = {};
+  users.groups.admin = { };
 
   virtualisation.vmVariant = {
     # following configuration is added only when building VM with build-vm
@@ -27,7 +26,7 @@
     settings.PasswordAuthentication = lib.mkForce true;
   };
 
-  networking.firewall.allowedTCPPorts = [22];
+  networking.firewall.allowedTCPPorts = [ 22 ];
   environment.systemPackages = with pkgs; [
     htop
   ];
diff --git a/misc/module-template.nix b/misc/module-template.nix
index ef28f49..855efa5 100644
--- a/misc/module-template.nix
+++ b/misc/module-template.nix
@@ -1,12 +1,13 @@
-{
-  pkgs,
-  config,
-  lib,
-  ...
-}: let
+{ pkgs
+, config
+, lib
+, ...
+}:
+let
   cfg = config.cherrykitten;
-in {
-  options.cherrykitten = {};
+in
+{
+  options.cherrykitten = { };
 
-  config = {};
+  config = { };
 }
diff --git a/modules/home/default.nix b/modules/home/default.nix
index dab1483..4581249 100644
--- a/modules/home/default.nix
+++ b/modules/home/default.nix
@@ -1,10 +1,9 @@
-{
-  pkgs,
-  config,
-  lib,
-  ...
+{ pkgs
+, config
+, lib
+, ...
 }: {
-  imports = [./fish ./nvim];
+  imports = [ ./fish ./nvim ];
   home.packages = with pkgs; [
     bat
     lsd
@@ -19,8 +18,8 @@
     git = {
       enable = true;
       extraConfig = {
-        init = {defaultBranch = "main";};
-        core = {editor = "nvim";};
+        init = { defaultBranch = "main"; };
+        core = { editor = "nvim"; };
         pull.rebase = true;
       };
     };
diff --git a/modules/home/fish/default.nix b/modules/home/fish/default.nix
index e99233b..f176e6f 100644
--- a/modules/home/fish/default.nix
+++ b/modules/home/fish/default.nix
@@ -1,8 +1,7 @@
-{
-  pkgs,
-  config,
-  lib,
-  ...
+{ pkgs
+, config
+, lib
+, ...
 }: {
   programs.fish = {
     enable = true;
diff --git a/modules/home/nvim/default.nix b/modules/home/nvim/default.nix
index d21b22c..0ba0a5b 100644
--- a/modules/home/nvim/default.nix
+++ b/modules/home/nvim/default.nix
@@ -1,101 +1,102 @@
-{
-  config,
-  pkgs,
-  inputs,
-  ...
+{ config
+, pkgs
+, inputs
+, ...
 }: {
-  programs.neovim = let
-    toLua = str: "lua << EOF\n${str}\nEOF\n";
-    toLuaFile = file: "lua << EOF\n${builtins.readFile file}\nEOF\n";
-  in {
-    enable = true;
+  programs.neovim =
+    let
+      toLua = str: "lua << EOF\n${str}\nEOF\n";
+      toLuaFile = file: "lua << EOF\n${builtins.readFile file}\nEOF\n";
+    in
+    {
+      enable = true;
 
-    viAlias = true;
-    vimAlias = true;
-    vimdiffAlias = true;
+      viAlias = true;
+      vimAlias = true;
+      vimdiffAlias = true;
 
-    extraPackages = with pkgs; [
-      lua-language-server
-      rnix-lsp
+      extraPackages = with pkgs; [
+        lua-language-server
+        rnix-lsp
 
-      xclip
-      wl-clipboard
+        xclip
+        wl-clipboard
 
-      rustfmt
-      black
-      isort
-      alejandra
-      prettierd
-      codespell
-      stylua
-    ];
+        rustfmt
+        black
+        isort
+        alejandra
+        prettierd
+        codespell
+        stylua
+      ];
 
-    plugins = with pkgs.vimPlugins; [
-      plenary-nvim
-      persistence-nvim
-      nvim-web-devicons
-      nui-nvim
+      plugins = with pkgs.vimPlugins; [
+        plenary-nvim
+        persistence-nvim
+        nvim-web-devicons
+        nui-nvim
 
-      {
-        plugin = comment-nvim;
-        config = toLua "require(\"Comment\").setup()";
-      }
+        {
+          plugin = comment-nvim;
+          config = toLua "require(\"Comment\").setup()";
+        }
 
-      {
-        plugin = catppuccin-nvim;
-        config = "colorscheme catppuccin-mocha";
-      }
+        {
+          plugin = catppuccin-nvim;
+          config = "colorscheme catppuccin-mocha";
+        }
 
-      {
-        plugin = which-key-nvim;
-        config = toLua "require(\"which-key\").setup()";
-      }
+        {
+          plugin = which-key-nvim;
+          config = toLua "require(\"which-key\").setup()";
+        }
 
-      {
-        plugin = neo-tree-nvim;
-        config = toLuaFile ./plugins/neo-tree.lua;
-      }
+        {
+          plugin = neo-tree-nvim;
+          config = toLuaFile ./plugins/neo-tree.lua;
+        }
 
-      {
-        plugin = conform-nvim;
-        config = toLuaFile ./plugins/conform.lua;
-      }
+        {
+          plugin = conform-nvim;
+          config = toLuaFile ./plugins/conform.lua;
+        }
 
-      {
-        plugin = dressing-nvim;
-        config = toLua "require(\"dressing\").setup()";
-      }
+        {
+          plugin = dressing-nvim;
+          config = toLua "require(\"dressing\").setup()";
+        }
 
-      {
-        plugin = bufferline-nvim;
-        config = toLua "require(\"bufferline\").setup()";
-      }
+        {
+          plugin = bufferline-nvim;
+          config = toLua "require(\"bufferline\").setup()";
+        }
 
-      {
-        plugin = lualine-nvim;
-        config = toLua "require(\"lualine\").setup()";
-      }
+        {
+          plugin = lualine-nvim;
+          config = toLua "require(\"lualine\").setup()";
+        }
 
-      {
-        plugin = indent-blankline-nvim;
-        config = toLua "require(\"ibl\").setup()";
-      }
-      {
-        plugin = noice-nvim;
-        config = toLuaFile ./plugins/noice.lua;
-      }
-      {
-        plugin = dashboard-nvim;
-        config = toLuaFile ./plugins/dashboard.lua;
-      }
+        {
+          plugin = indent-blankline-nvim;
+          config = toLua "require(\"ibl\").setup()";
+        }
+        {
+          plugin = noice-nvim;
+          config = toLuaFile ./plugins/noice.lua;
+        }
+        {
+          plugin = dashboard-nvim;
+          config = toLuaFile ./plugins/dashboard.lua;
+        }
 
-      nvim-notify
-      vim-nix
-    ];
+        nvim-notify
+        vim-nix
+      ];
 
-    extraLuaConfig = ''
-      ${builtins.readFile ./options.lua}
-      ${builtins.readFile ./keymap.lua}
-    '';
-  };
+      extraLuaConfig = ''
+        ${builtins.readFile ./options.lua}
+        ${builtins.readFile ./keymap.lua}
+      '';
+    };
 }
diff --git a/modules/nixos/common.nix b/modules/nixos/common.nix
index 63dfe07..ae7513f 100644
--- a/modules/nixos/common.nix
+++ b/modules/nixos/common.nix
@@ -1,11 +1,12 @@
-{
-  lib,
-  config,
-  pkgs,
-  ...
-}: let
+{ lib
+, config
+, pkgs
+, ...
+}:
+let
   cfg = config.cherrykitten.common;
-in {
+in
+{
   options.cherrykitten.common = {
     test = lib.mkOption {
       type = lib.types.str;
@@ -21,7 +22,7 @@ in {
   ];
 
   config = {
-    nix.settings.experimental-features = ["nix-command" "flakes"];
+    nix.settings.experimental-features = [ "nix-command" "flakes" ];
 
     home-manager.useGlobalPkgs = true;
     home-manager.useUserPackages = true;
@@ -45,10 +46,10 @@ in {
         nerdfonts
       ];
       fontconfig = {
-        defaultFonts.emoji = ["Noto Emoji"];
-        defaultFonts.serif = ["Monaspace Xenon" "FiraCode Nerd Font" "Hack Nerd Font" "NotoSans Nerd Font"];
-        defaultFonts.sansSerif = ["Monaspace Xenon" "FiraCode Nerd Font" "Hack Nerd Font" "NotoSerif Nerd Font"];
-        defaultFonts.monospace = ["Monaspace Xenon" "FiraCode Nerd Font" "Hack Nerd Font"];
+        defaultFonts.emoji = [ "Noto Emoji" ];
+        defaultFonts.serif = [ "Monaspace Xenon" "FiraCode Nerd Font" "Hack Nerd Font" "NotoSans Nerd Font" ];
+        defaultFonts.sansSerif = [ "Monaspace Xenon" "FiraCode Nerd Font" "Hack Nerd Font" "NotoSerif Nerd Font" ];
+        defaultFonts.monospace = [ "Monaspace Xenon" "FiraCode Nerd Font" "Hack Nerd Font" ];
       };
     };
 
diff --git a/modules/nixos/graphical.nix b/modules/nixos/graphical.nix
index 9a63ffc..fba13a1 100644
--- a/modules/nixos/graphical.nix
+++ b/modules/nixos/graphical.nix
@@ -1,11 +1,12 @@
-{
-  pkgs,
-  config,
-  lib,
-  ...
-}: let
+{ pkgs
+, config
+, lib
+, ...
+}:
+let
   cfg = config.cherrykitten.graphical;
-in {
+in
+{
   options.cherrykitten.graphical = {
     enable = lib.mkEnableOption (lib.mdDoc "graphical stuffs");
   };
diff --git a/modules/nixos/security.nix b/modules/nixos/security.nix
index 381de29..19f19e0 100644
--- a/modules/nixos/security.nix
+++ b/modules/nixos/security.nix
@@ -1,5 +1,5 @@
-{pkgs, ...}: {
-  networking.firewall.allowedTCPPorts = [22];
+{ pkgs, ... }: {
+  networking.firewall.allowedTCPPorts = [ 22 ];
 
   services.openssh = {
     enable = true;
diff --git a/modules/nixos/yubikey.nix b/modules/nixos/yubikey.nix
index 8edc4f9..cf90c61 100644
--- a/modules/nixos/yubikey.nix
+++ b/modules/nixos/yubikey.nix
@@ -1,5 +1,5 @@
-{pkgs, ...}: {
-  services.udev.packages = with pkgs; [libu2f-host yubikey-personalization];
+{ pkgs, ... }: {
+  services.udev.packages = with pkgs; [ libu2f-host yubikey-personalization ];
 
   programs.gnupg.agent = {
     enable = true;
diff --git a/modules/users/default.nix b/modules/users/default.nix
index 04aa4bc..e486207 100644
--- a/modules/users/default.nix
+++ b/modules/users/default.nix
@@ -1,22 +1,23 @@
-{
-  pkgs,
-  config,
-  lib,
-  ...
-}: let
+{ pkgs
+, config
+, lib
+, ...
+}:
+let
   cfg = config.cherrykitten.users;
-in {
+in
+{
   options.cherrykitten.users = {
-    sammy.enable = lib.mkEnableOption "sammy" // {default = true;};
+    sammy.enable = lib.mkEnableOption "sammy" // { default = true; };
   };
 
   config = {
     users.users.sammy = lib.mkIf cfg.sammy.enable {
       isNormalUser = true;
-      extraGroups = ["networkmanager" "wheel" "docker"];
+      extraGroups = [ "networkmanager" "wheel" "docker" ];
       shell = pkgs.fish;
       ignoreShellProgramCheck = true;
-      openssh.authorizedKeys.keys = ["ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJZyQSZw+pExsx2RXB+yxbaJGB9mtvudbQ/BP7E1yKvr openpgp:0x6068FEBB"];
+      openssh.authorizedKeys.keys = [ "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJZyQSZw+pExsx2RXB+yxbaJGB9mtvudbQ/BP7E1yKvr openpgp:0x6068FEBB" ];
     };
 
     home-manager.users.sammy = lib.mkIf cfg.sammy.enable (import ./sammy.nix);
diff --git a/modules/users/sammy.nix b/modules/users/sammy.nix
index 97f5844..391ded7 100644
--- a/modules/users/sammy.nix
+++ b/modules/users/sammy.nix
@@ -1,5 +1,5 @@
-{...}: {
-  imports = [../home];
+{ ... }: {
+  imports = [ ../home ];
 
   programs.git = {
     userName = "CherryKitten";