these 6 derivations will be built:
  /nix/store/yyxnn2r6a509avm1svwcbd8y80k61hmq-libguestfs-1.56.2.drv
  /nix/store/7d8smqybvljcp4iad8ri1pld260bmf1v-guestfs-tools-1.52.3.drv
  /nix/store/1hp3kzb5y1nw78idww60an5vg4z32rxb-ubuntu-26.04-server-cloudimg-amd64v3.img-nix-vm-test.qcow2.drv
  /nix/store/czkrflhhq7kczzy244c45h4736kxdbw6-run-vm-vm.drv
  /nix/store/n790injq3mlhkmaaskvmdvgqinpjyhp1-driver-configuration.json.drv
  /nix/store/5jf0avnb60bakajcfhc1ymplw1r1s4p5-vm-test-ubuntu_26_04.drv