diff --git a/hosts/firefly/configuration.nix b/hosts/firefly/configuration.nix
index 60f3be6..cc97a9e 100644
--- a/hosts/firefly/configuration.nix
+++ b/hosts/firefly/configuration.nix
@@ -1,32 +1,14 @@
 { config, pkgs, ... }:
 
 {
-  imports =
-    [ # Include the results of the hardware scan.
-      ./hardware-configuration.nix
-      ../workstation.nix
-    ];
-  networking.hostName = "firefly"; # Define your hostname.
- 
-  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+    imports =
+        [ # Include the results of the hardware scan.
+        ./hardware-configuration.nix
+            ../workstation.nix
+        ];
+    networking.hostName = "firefly"; # Define your hostname.
 
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
-  boot.loader.efi.efiSysMountPoint = "/boot/efi";
-
-  boot.initrd.secrets = {
-    "/crypto_keyfile.bin" = null;
-  };
-
-  boot.kernelPackages = pkgs.linuxPackages_latest;
-
-
-  # This value determines the NixOS release from which the default
-  # settings for stateful data, like file locations and database versions
-  # on your system were taken. It‘s perfectly fine and recommended to leave
-  # this value at the release version of the first install of this system.
-  # Before changing this value read the documentation for this option
-  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "22.11"; # Did you read the comment?
+    boot.loader.efi.efiSysMountPoint = "/boot/efi";
+    system.stateVersion = "22.11"; # Did you read the comment?
 
 }
diff --git a/hosts/p14s/configuration.nix b/hosts/p14s/configuration.nix
index d044f72..9f856ed 100644
--- a/hosts/p14s/configuration.nix
+++ b/hosts/p14s/configuration.nix
@@ -1,37 +1,18 @@
-# Edit this configuration file to define what should be installed on
-# your system.  Help is available in the configuration.nix(5) man page
-# and in the NixOS manual (accessible by running ‘nixos-help’).
-
 { config, pkgs, ... }:
 
 {
-  imports =
-    [ # Include the results of the hardware scan.
-      ./hardware-configuration.nix
-      ../workstation.nix
-    ];
+    imports =
+        [ # Include the results of the hardware scan.
+        ./hardware-configuration.nix
+            ../workstation.nix
+        ];
 
-  # Bootloader.
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
+    networking.hostName = "p14s"; # Define your hostname.
 
-  # Setup keyfile
-  boot.initrd.secrets = {
-    "/crypto_keyfile.bin" = null;
-  };
+    users.users.dm.extraGroups = [ "video" ];
+    programs.light.enable = true;
+    services.tlp.enable = true;
 
-  networking.hostName = "p14s"; # Define your hostname.
-
-  users.users.dm.extraGroups = [ "video" ];
-  programs.light.enable = true;
-  services.tlp.enable = true;
-
-  # This value determines the NixOS release from which the default
-  # settings for stateful data, like file locations and database versions
-  # on your system were taken. It‘s perfectly fine and recommended to leave
-  # this value at the release version of the first install of this system.
-  # Before changing this value read the documentation for this option
-  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "23.05"; # Did you read the comment?
+    system.stateVersion = "23.05"; # Did you read the comment?
 
 }
diff --git a/hosts/workstation.nix b/hosts/workstation.nix
index c386ed8..4d00e5f 100644
--- a/hosts/workstation.nix
+++ b/hosts/workstation.nix
@@ -1,84 +1,103 @@
 { config, pkgs, ... }:
 
 {
-  hardware.opengl.enable = true;
+# Bootloader.
+    boot.loader.systemd-boot.enable = true;
+    boot.loader.efi.canTouchEfiVariables = true;
 
-  networking.networkmanager.enable = true;
-
-  time.timeZone = "Europe/Berlin";
-
-  i18n.defaultLocale = "en_US.UTF-8";
-
-  i18n.extraLocaleSettings = {
-    LC_ADDRESS = "de_DE.UTF-8";
-    LC_IDENTIFICATION = "de_DE.UTF-8";
-    LC_MEASUREMENT = "de_DE.UTF-8";
-    LC_MONETARY = "de_DE.UTF-8";
-    LC_NAME = "de_DE.UTF-8";
-    LC_NUMERIC = "de_DE.UTF-8";
-    LC_PAPER = "de_DE.UTF-8";
-    LC_TELEPHONE = "de_DE.UTF-8";
-    LC_TIME = "de_DE.UTF-8";
-  };
-  fonts.packages = with pkgs; [
-  noto-fonts
-  font-awesome
-  ];
-
-  security.polkit.enable = true;
-
-  # Enable sound with pipewire.
-  sound.enable = true;
-  hardware.pulseaudio.enable = false;
-  security.rtkit.enable = true;
-  services.pipewire = {
-    enable = true;
-    alsa.enable = true;
-    alsa.support32Bit = true;
-    pulse.enable = true;
-  };
-
-  services.openssh = {
-    enable = true;
-    settings = {
-      PasswordAuthentication = false;
-      KbdInteractiveAuthentication = false;
+    boot.initrd.secrets = {
+        "/crypto_keyfile.bin" = null;
     };
-  };
 
-  users.users.dm = {
-    isNormalUser = true;
-    description = "Daniel Meiburg";
-    extraGroups = [ "networkmanager" "wheel" ];
-    packages = with pkgs; [
-    ];
-    openssh.authorizedKeys.keys = [
-    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJipJtCrYUPokjppDdz97XHo2vEDBUzgvUU33Wst6AWt openpgp:0xF3D173A6"
-    ];
-  };
+    nix.settings.experimental-features = [ "nix-command" "flakes" ];
+    boot.kernelPackages = pkgs.linuxPackages_latest;
 
-  # enable nitrokeys
-  services.udev.packages = [ pkgs.nitrokey-udev-rules ];
-  programs = {
-    ssh.startAgent = false;
-    gnupg.agent = {
-      pinentryFlavor = "qt";
-      enable = true;
-      enableSSHSupport = true;
+    hardware.opengl.enable = true;
+
+    networking.networkmanager.enable = true;
+
+    time.timeZone = "Europe/Berlin";
+
+    i18n.defaultLocale = "en_US.UTF-8";
+
+    i18n.extraLocaleSettings = {
+        LC_ADDRESS = "de_DE.UTF-8";
+        LC_IDENTIFICATION = "de_DE.UTF-8";
+        LC_MEASUREMENT = "de_DE.UTF-8";
+        LC_MONETARY = "de_DE.UTF-8";
+        LC_NAME = "de_DE.UTF-8";
+        LC_NUMERIC = "de_DE.UTF-8";
+        LC_PAPER = "de_DE.UTF-8";
+        LC_TELEPHONE = "de_DE.UTF-8";
+        LC_TIME = "de_DE.UTF-8";
     };
-  };
 
-  nixpkgs.config.allowUnfree = true;
+    fonts.packages = with pkgs; [
+        noto-fonts
+            font-awesome
+    ];
+
+    security.polkit.enable = true;
+
+# Enable sound with pipewire.
+    sound.enable = true;
+    hardware.pulseaudio.enable = false;
+    security.rtkit.enable = true;
+    services.pipewire = {
+        enable = true;
+        alsa.enable = true;
+        alsa.support32Bit = true;
+        pulse.enable = true;
+    };
+
+    services.openssh = {
+        enable = true;
+        settings = {
+            PasswordAuthentication = false;
+            KbdInteractiveAuthentication = false;
+        };
+    };
+
+    users.users.dm = {
+        isNormalUser = true;
+        description = "Daniel Meiburg";
+        extraGroups = [ "networkmanager" "wheel" ];
+        packages = with pkgs; [
+        ];
+        openssh.authorizedKeys.keys = [
+            "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJipJtCrYUPokjppDdz97XHo2vEDBUzgvUU33Wst6AWt openpgp:0xF3D173A6"
+        ];
+    };
+
+# enable nitrokeys
+    services.udev.packages = [ pkgs.nitrokey-udev-rules ];
+    programs = {
+        ssh.startAgent = false;
+        gnupg.agent = {
+            pinentryFlavor = "qt";
+            enable = true;
+            enableSSHSupport = true;
+        };
+    };
+
+    nixpkgs.config.allowUnfree = true;
+
+    environment.systemPackages = with pkgs; [
+    ];
+    programs.neovim = {
+        enable = true;
+        viAlias = true;
+        vimAlias = true;
+        defaultEditor = true;
+    };
+    programs.fish.enable = true;
+    services.getty.autologinUser = "dm";
+    programs.dconf.enable = true;
+
+    nix.gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "--delete-older-than 30d";
+    };
 
-  environment.systemPackages = with pkgs; [
-  ];
-  programs.neovim = {
-    enable = true;
-    viAlias = true;
-    vimAlias = true;
-    defaultEditor = true;
-  };
-  programs.fish.enable = true;
-  services.getty.autologinUser = "dm";
-  programs.dconf.enable = true;
 }