diff --git a/nix/configuration.nix b/nix/configuration.nix
index e2583ee..f611be6 100644
--- a/nix/configuration.nix
+++ b/nix/configuration.nix
@@ -15,6 +15,7 @@
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;
 
+  hardware.bluetooth.enable = true;
   networking.networkmanager.enable = true;
   networking.hostName = "athena"; # Define your hostname.
   # Create entries for /etc/wpa_supplicant.conf by running `wpa_passphrase SSID PASSWORD`
@@ -110,7 +111,11 @@
 
   # Enable sound.
   sound.enable = true;
-  hardware.pulseaudio.enable = true;
+  hardware.pulseaudio = {
+    enable = true;
+    # The full package is necessary to allow bluetooth audio devices.
+    package = pkgs.pulseaudioFull;
+  };
 
   # Enable the X11 windowing system.
   services.xserver.enable = true;
@@ -133,6 +138,21 @@
     configDir = "/home/haak/synced/.config/syncthing";
   };
 
+  location.provider = "geoclue2";
+
+  services.redshift = {
+    enable = true;
+    brightness = {
+      # Note the string values below.
+      day = "1";
+      night = "1";
+    };
+    temperature = {
+      day = 5500;
+      night = 3700;
+    };
+  };
+
   # Define a user account. Don't forget to set a password with ‘passwd’.
   users.users.haak = {
     isNormalUser = true;