diff --git a/home-modules/firefox/default.nix b/home-modules/firefox/default.nix
index b47f894..350a013 100644
--- a/home-modules/firefox/default.nix
+++ b/home-modules/firefox/default.nix
@@ -213,7 +213,7 @@ in
         };
         profiles = {
           default = {
-            extensions = with pkgs.firefox-addons; [
+            extensions.packages = with pkgs.firefox-addons; [
               ublock-origin
               bitwarden
               clearurls
diff --git a/nixos-modules/audio/default.nix b/nixos-modules/audio/default.nix
index 13f3fe3..7ddd829 100644
--- a/nixos-modules/audio/default.nix
+++ b/nixos-modules/audio/default.nix
@@ -19,35 +19,27 @@ in
 
     environment.systemPackages = with pkgs; [
       mod-arpeggiator-lv2
-      rkrlv2
       bolliedelayxt-lv2
       airwindows-lv2
       aether-lv2
       swh_lv2
       neural-amp-modeler-lv2
       mda_lv2
-      x42-plugins
-      #tunefish
       mod-distortion
       infamousPlugins
       drumgizmo
-      distrho-ports
       bshapr
       bchoppr
       gxplugins-lv2
       talentedhack
       plujain-ramp
       mooSpace
-      artyFX
       boops
       metersLv2
       bs2b-lv2
-      oxefmsynth
       ninjas2
       bespokesynth
       zam-plugins
-      surge-XT
-      surge
       lsp-plugins
       ladspaPlugins
       AMB-plugins
@@ -59,7 +51,6 @@ in
       autotalent
       tap-plugins
       xsynth_dssi
-
     ];
 
     environment.sessionVariables =
diff --git a/systems/copy-pasta/default.nix b/systems/copy-pasta/default.nix
index 312235e..ac2b74a 100644
--- a/systems/copy-pasta/default.nix
+++ b/systems/copy-pasta/default.nix
@@ -15,6 +15,8 @@
     self.inputs.srvos.nixosModules.desktop
   ];
 
+  boot.loader.grub.devices = [ "/dev/sda" ];
+
   #facter.reportPath = ./facter.json;
 
   jopejoe1 = {
diff --git a/systems/omoikane/default.nix b/systems/omoikane/default.nix
index 6b25ad0..8305706 100644
--- a/systems/omoikane/default.nix
+++ b/systems/omoikane/default.nix
@@ -17,6 +17,19 @@
 
   facter.reportPath = ./facter.json;
 
+  virtualisation.xen = {
+    enable = false;
+    efi.bootBuilderVerbosity = "info"; # Adds a handy report that lets you know which Xen boot entries were created.
+    bootParams = [
+      "vga=ask" # Useful for non-headless systems with screens bigger than 640x480.
+      "dom0=pvh" # Uses the PVH virtualisation mode for the Domain 0, instead of PV.
+    ];
+    dom0Resources = {
+      memory = 32768; # Only allocates 1GiB of memory to the Domain 0, with the rest of the system memory being freely available to other domains.
+      maxVCPUs = 8; # Allows the Domain 0 to use, at most, two CPU cores.
+    };
+  };
+
   programs.nix-ld = {
     enable = true;
     libraries = with pkgs; [