virt only on North

home-modules/virt-manager.nix

@@ -1,5 +1,6 @@
-{ config, pkgs, ... }:
+{ config, pkgs, host, ... }:
 {
+  config = pkgs.lib.mkIf (host == "NxNORTH") { 
     home.packages = with pkgs; [
       virt-manager
     ];
@@ -11,4 +12,5 @@
         uris = [ "qemu:///system" ];
       };
     };
+  };
 }

system-modules/virtualisation.nix

@@ -1,10 +1,12 @@
-{ config, pkgs, user, ... }:
+{ config, pkgs, lib, user, host, ... }:
 
 {
+  config = lib.mkIf (host == "NxNORTH") {
     environment.systemPackages = with pkgs; [
       virtiofsd
     ];
     virtualisation.libvirtd.enable = true;
     programs.virt-manager.enable = true;
     users.users."${user}".extraGroups = [ "libvirtd" ];
+  };
 }