diff --git a/modules/application-groups/system-utilities.nix b/modules/application-groups/system-utilities.nix
index f4a910b..9897201 100644
--- a/modules/application-groups/system-utilities.nix
+++ b/modules/application-groups/system-utilities.nix
@@ -20,7 +20,7 @@
   services.hardware.openrgb.enable = true;
 
   environment.systemPackages = with pkgs; [
-    btop
+    btop-cuda
     desktop-file-utils
     dnsutils
     ffmpeg-full
@@ -40,7 +40,7 @@
     networkmanager
     networkmanagerapplet
     nmap
-    nvtopPackages.full
+    # nvtopPackages.full  # <- Build failure: https://github.com/nixos/nixpkgs/issues/456928
     openrgb-with-all-plugins
     pciutils
     rofi-bluetooth
diff --git a/modules/system/fonts.nix b/modules/system/fonts.nix
index 66640ed..d3ca4ba 100644
--- a/modules/system/fonts.nix
+++ b/modules/system/fonts.nix
@@ -13,7 +13,7 @@
 
   fonts.packages = with pkgs; [
     noto-fonts
-    noto-fonts-emoji
+    noto-fonts-color-emoji
     liberation_ttf
     fira-code
     fira-code-symbols
diff --git a/modules/system/nix-settings.nix b/modules/system/nix-settings.nix
index c51aba9..3172162 100644
--- a/modules/system/nix-settings.nix
+++ b/modules/system/nix-settings.nix
@@ -23,9 +23,14 @@
   programs.bash.shellAliases = {
     # Nix rebuild, switch
     nrs = "bash -c \"cd /etc/nixos && sudo nixos-rebuild switch --flake .#$(hostname) ; exit\"";
+    # with tracing
+    tnrs = "bash -c \"cd /etc/nixos && sudo nixos-rebuild switch --show-trace --flake .#$(hostname) ; exit\"";
+
 
     # Nix flake update, rebuild, switch
-    nus = "bash -c \"cd /etc/nixos && sudo nix flake update && sudo nixos-rebuild switch --flake .#$(hostname) ; exit\"";
+    nus = "bash -c \"cd /etc/nixos && sudo nix flake update && nrs ; exit\"";
+    # with tracing
+    tnus = "bash -c \"cd /etc/nixos && sudo nix flake update && tnrs ; exit\"";
 
     # Special cleanup, needed when efi partition runs out of space. Deletes all but the last five generations.
     # Remember to make that partition bigger in the future...
diff --git a/users/caperren/caperren.nix b/users/caperren/caperren.nix
index bd3a511..b6d7715 100644
--- a/users/caperren/caperren.nix
+++ b/users/caperren/caperren.nix
@@ -92,6 +92,9 @@ in
       enable = true;
       defaultApplications = {
         "application/pdf" = [ "okularApplication_pdf.desktop" ];
+        "x-scheme-handler/http" = [ "firefox.desktop" ];
+        "x-scheme-handler/https" = [ "firefox.desktop" ];
+        "text/html" = [ "firefox.desktop" ];
       };
     };
 
diff --git a/users/caperren/dotfiles/hyprpaper/backgrounds/2.jpg b/users/caperren/dotfiles/hyprpaper/backgrounds/2.jpg
new file mode 100644
index 0000000..d96c713
Binary files /dev/null and b/users/caperren/dotfiles/hyprpaper/backgrounds/2.jpg differ