diff --git a/configuration.nix b/configuration.nix
index 40f1e94..d53a950 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -16,6 +16,9 @@
   boot.loader.grub.device = "/dev/sda";
   boot.loader.grub.useOSProber = true;
 
+  # newest kernel
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+
   networking.hostName = "nixos"; # Define your hostname.
   # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
 
@@ -115,6 +118,12 @@
  
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
 
+  # automatically delete older generations and keep last 5
+  nix.settings.auto-optimise-store = true;
+  nix.gc.automatic = true;
+  nix.gc.dates = "daily";
+  nix.gc.options = "--delete-older-than +5";
+
   # 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
diff --git a/home.nix b/home.nix
index c027bdb..f659847 100644
--- a/home.nix
+++ b/home.nix
@@ -13,11 +13,15 @@
     "org/gnome/desktop/interface" = {
         color-scheme = "prefer-dark";
         enable-hot-corners = true;
+        clock-show-seconds = true;
     };
     "org/gnome/mutter" = {
         dynamic-workspaces = true;
         edge-tiling = true;
     };
+    "org/gnome/shell" = {
+      favorite-apps = ["org.gnome.Nautilus.desktop" "gnome-system-monitor.desktop" "firefox.desktop" "org.gnome.Console.desktop"];
+    };
   };
 
   # nautilus settings
@@ -29,4 +33,11 @@
         default-zoom-level = "small";
     };
   };
+
+  # set git names
+  programs.git = {
+    enable = true;
+    userName  = "Lukas Heiligenbrunner";
+    userEmail = "lukas.heiligenbrunner@gmail.com";
+  };
 }
\ No newline at end of file
diff --git a/modules/packages.nix b/modules/packages.nix
index 56f5870..d455d00 100644
--- a/modules/packages.nix
+++ b/modules/packages.nix
@@ -20,6 +20,9 @@
     atomix # puzzle game
   ]);
 
+  # disable xterm
+  services.xserver.excludePackages = [ pkgs.xterm ]; 
+
   # packages in global env
   environment.systemPackages = with pkgs; [
     # system utilities
@@ -39,5 +42,12 @@
     # multimedia
     vlc
     gimp
+
+    # file transfer
+    warp
+
+    # gui utilities
+    pdfarranger
+    diebahn
   ];
 }
\ No newline at end of file