these 4 derivations will be built:
  /nix/store/jf5l1hrz99kb9gidmszvins0zg6a0hwc-ubuntu-26.04-server-cloudimg-amd64.img-nix-vm-test.qcow2.drv
  /nix/store/ca8r0ygkwmkgsfsi4c6wy0kza7lh9h6y-run-vm-vm.drv
  /nix/store/2sqwssqn7z6rgniqfihls3r0z2xh6lb5-driver-configuration.json.drv
  /nix/store/5zhywdxbh301gf9iyz84xiddiam807av-vm-test-ubuntu_26_04.drv