virtualisation: restructure kvm module options and enable libvirt by default

modules/desktop/virtualisation/default.nix

@@ -13,5 +13,5 @@
 
 [
   ./docker.nix
-#  ./qemu.nix
+  ./qemu.nix
 ]

modules/desktop/virtualisation/kvm-amd.nix

@@ -0,0 +1,12 @@
+#
+# KVM module options amd
+#
+
+{ config, pkgs, user, ... }:
+
+{                                             # Add libvirtd and kvm to userGroups
+  boot.extraModprobeConfig = ''
+    options kvm_amd nested=0 avic=1 npt=1
+  '';                                         # Needed to run OSX-KVM 
+}
+

modules/desktop/virtualisation/kvm-intel.nix

@@ -0,0 +1,13 @@
+#
+# KVM module options intel 
+#
+
+{ config, pkgs, user, ... }:
+
+{                                             # Add libvirtd and kvm to userGroups
+  boot.extraModprobeConfig = ''
+    options kvm_intel nested=1
+    options kvm_intel emulate_invalid_guest_state=0
+    options kvm ignore_nsrs=1
+  '';                                         # Needed to run OSX-KVM 
+}

modules/desktop/virtualisation/qemu.nix

@@ -5,12 +5,6 @@
 { config, pkgs, user, ... }:
 
 {                                             # Add libvirtd and kvm to userGroups
-  boot.extraModprobeConfig = ''
-    options kvm_intel nested=1
-    options kvm_intel emulate_invalid_guest_state=0
-    options kvm ignore_nsrs=1
-  '';                                         # Needed to run OSX-KVM 
-
   users.groups.libvirtd.members = [ "root" "${user}" ];
 
   virtualisation = {