diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/configuration.nix
diff --git a/configuration.nix b/configuration.nix
deleted file mode 120000
index 7b602e3..0000000
--- a/configuration.nix
+++ /dev/null
@@ -1 +0,0 @@
-host/achiles.nix
\ No newline at end of file
diff --git a/host/kastanje.nix b/host/kastanje.nix
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+++ b/host/kastanje.nix
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+# 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 =
+    [
+      ../hardware/apu.nix
+      ../role/base.nix
+    ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/ab5a598b-6609-465f-8ab8-b894b8a5e32a";
+      fsType = "btrfs";
+      options = [ "defaults" "noatime" ];
+    };
+
+  # Use the GRUB 2 boot loader.
+  boot.loader.grub.enable = true;
+  boot.loader.grub.version = 2;
+  # boot.loader.grub.efiSupport = true;
+  # boot.loader.grub.efiInstallAsRemovable = true;
+  # boot.loader.efi.efiSysMountPoint = "/boot/efi";
+  # Define on which hard drive you want to install Grub.
+  boot.loader.grub.device = "/dev/mmcblk0"; # or "nodev" for efi only
+
+  networking.hostName = "kastanje"; # Define your hostname.
+
+  # Configure network proxy if necessary
+  # networking.proxy.default = "http://user:password@proxy:port/";
+  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
+
+  # Set your time zone.
+  # time.timeZone = "Europe/Amsterdam";
+
+  # List services that you want to enable:
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  # networking.firewall.enable = false;
+
+  # Define a user account. Don't forget to set a password with ‘passwd’.
+  # users.users.jane = {
+  #   isNormalUser = true;
+  #   extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
+  # };
+
+  # This value determines the NixOS release with which your system is to be
+  # compatible, in order to avoid breaking some software such as database
+  # servers. You should change this only after NixOS release notes say you
+  # should.
+  system.stateVersion = "19.03"; # Did you read the comment?
+
+}