diff --git a/README.md b/README.md
new file mode 100644
index 0000000..edd602a
--- /dev/null
+++ b/README.md
@@ -0,0 +1,9 @@
+# nixos-configuration
+
+When adding a new host:
+1. install NixOS via the graphical installer
+2. `mv /etc/hardware-configuration ./devicename-hardware-configuration.nix`
+3. copy an existing devicename.nix
+5. change import to new-devicename-hardware-configuration.nix
+4. `ln -s ./new-devicename.nix /etc/nixos/configuration`
+5. apply
diff --git a/common.nix b/common.nix
index 0e03e65..34bb1f9 100644
--- a/common.nix
+++ b/common.nix
@@ -9,16 +9,7 @@
     ./home.nix
   ];
 
-  nixpkgs.config = {
-    # override insync build version
-    packageOverrides = pkgs: {
-      my = import (builtins.fetchTarball https://github.com/kaesaecracker/nixpkgs/archive/db254c650b7f5b6657c6579afba1568f7f997195.tar.gz) {
-        config = config.nixpkgs.config;
-      };
-    };
-
-    allowUnfree = true;
-  };
+  nixpkgs.config.allowUnfree = true;
 
   boot = {
     # supportedFilesystems = [ "btrfs" ];
@@ -83,10 +74,6 @@
       # Enable the X11 windowing system / wayland depending on DE
       enable = true;
 
-      # Enable the GNOME Desktop Environment.
-      displayManager.gdm.enable = true;
-      desktopManager.gnome.enable = true;
-
       # Configure keymap in X11
       layout = "de";
       xkbVariant = "";
@@ -104,10 +91,6 @@
       permitRootLogin = "no";
     };
 
-    gnome = {
-      tracker-miners.enable = false;
-      tracker.enable = false;
-    };
   };
 
   # Configure console keymap
@@ -161,24 +144,6 @@
     package = pkgs.gitFull;
   };
 
-  environment = {
-    # List packages installed in system profile.
-    systemPackages = with pkgs; [
-      #  The Nano editor is also installed by default
-    ];
-
-    # remove gnome default apps
-    gnome.excludePackages = with pkgs.gnome; [
-      cheese # photo booth
-      epiphany # web browser
-      evince # document viewer
-      geary # email client
-      seahorse # password manager
-      gnome-clocks
-      gnome-maps
-      gnome-weather
-      gnome-music
-      pkgs.gnome-connections
-    ];
-  };
+  # List packages installed in system profile.
+  # environment.systemPackages = [];
 }
diff --git a/gnome.nix b/gnome.nix
new file mode 100644
index 0000000..3abbd72
--- /dev/null
+++ b/gnome.nix
@@ -0,0 +1,32 @@
+{
+  config,
+  pkgs,
+  ...
+}: {
+  services = {
+    xserver = {
+        # Enable the GNOME Desktop Environment.
+        displayManager.gdm.enable = true;
+        desktopManager.gnome.enable = true;
+    };
+
+    gnome = {
+      tracker-miners.enable = false;
+      tracker.enable = false;
+    };
+  };
+
+  # remove some gnome default apps
+  environment.gnome.excludePackages = with pkgs.gnome; [
+    cheese # photo booth
+    epiphany # web browser
+    evince # document viewer
+    geary # email client
+    seahorse # password manager
+    gnome-clocks
+    gnome-maps
+    gnome-weather
+    gnome-music
+    pkgs.gnome-connections
+];
+}
diff --git a/home.nix b/home.nix
index 53ca13b..93b76d2 100644
--- a/home.nix
+++ b/home.nix
@@ -3,6 +3,13 @@
   pkgs,
   ...
 }: {
+  # override insync build version
+  nixpkgs.config.packageOverrides = pkgs: {
+    my = import (builtins.fetchTarball https://github.com/kaesaecracker/nixpkgs/archive/db254c650b7f5b6657c6579afba1568f7f997195.tar.gz) {
+      config = config.nixpkgs.config;
+    };
+  };
+
   # Define user account
   users.users.vinzenz = {
     isNormalUser = true;
@@ -118,6 +125,9 @@
         extensions = [pkgs.vscode-extensions.bbenoist.nix];
         userSettings = {
             "files.insertFinalNewline" = true;
+            "[nix]" = {
+              "editor.tabSize" = 2;
+            };
         };
       };
     };
diff --git a/vinzenz-lpt.nix b/vinzenz-lpt.nix
index 2ad0e9d..fa1218c 100644
--- a/vinzenz-lpt.nix
+++ b/vinzenz-lpt.nix
@@ -2,7 +2,8 @@
   networking.hostName = "vinzenz-lpt";
 
   imports = [
-    ./common.nix
     ./vinzenz-lpt-hardware-configuration.nix
+    ./common.nix
+    ./gnome.nix
   ];
 }