Update and get rid of VirtualBox ! Hurray ! (Friendship with VirtualBox ended, now KVM is my best friend)

hosts/t0urn3s0l/configuration.nix

@@ -110,7 +110,7 @@
     isNormalUser = true;
     description = "zuma";
     shell = pkgs.zsh;
-    extraGroups = [ "networkmanager" "wheel" "docker" "vboxsf"];
+    extraGroups = [ "networkmanager" "wheel" "docker" "libvirtd"];
   };
 
   home-manager = {
@@ -218,6 +218,7 @@
     activitywatch # Stats on time spent
     awatcher # Wayland Idle and window watcher
     swaynotificationcenter # Notification daemon and notification center
+    virtiofsd # Device backend for libvrtd
   ];
 
   services.gvfs.enable = true; # Enable Trash so that if I delete my nix files without having saved them I can backup .........
@@ -236,9 +237,10 @@
     };
   };
 
-  virtualisation.virtualbox.host.enable = true;
-  virtualisation.virtualbox.host.enableExtensionPack = true;
-  users.extraGroups.vboxusers.members = [ "zuma" ];
+  programs.virt-manager.enable = true;
+  users.groups.libvirtd.members = ["zuma"];
+  virtualisation.libvirtd.enable = true;
+  virtualisation.spiceUSBRedirection.enable = true;
 
   fonts.packages = with pkgs; [
     nerd-fonts.fira-code

hosts/t0urn3s0l/hardware-configuration.nix

@@ -13,11 +13,14 @@
   boot.kernelModules = [ "kvm-intel" ];
   boot.extraModulePackages = [ ];
 
-  boot.kernelParams = [
-    # For VirtualBox to work
-    # https://github.com/NixOS/nixpkgs/issues/363887
-    "kvm.enable_virt_at_load=0"
+  # For libvirtd (KVM emulation)
+  # https://blog.redstone.engineer/posts/nixos-windows-guest-graphical-improvement-filesystem-clipboard-sharing-guide/
+  boot.extraModprobeConfig = ''
+    options kvm_intel nested=1
+    options kvm ignore_msrs=1 
+  '';
 
+  boot.kernelParams = [
     # Hyrpland suspend / wakeup
     "nvidia.NVreg_PreserveVideoMemoryAllocations=1"
   ];