some upd

nixos/custom.nix

@@ -4,6 +4,8 @@
   # networkmanagerapplet and nm-applet
 
   virtualisation.virtualbox.host.enable = true;
+  virtualisation.libvirtd.enable = true;
+  programs.virt-manager.enable = true;
   users.extraGroups.vboxusers.members = [ "krosh" ];
 
   services.udev.packages = [ pkgs.yubikey-personalization ];
@@ -61,6 +63,7 @@
     yubioath-flutter
     yubikey-manager
     pam_u2f
+    qbittorrent
   ];
 
   # starting the following units: accounts-daemon.service, systemd-modules-load.service, systemd-tmpfiles-resetup.service, tlp.ser