these 2 derivations will be built:
  /nix/store/897ndacj0kllcyy6b1548qqj5fwgjqga-nixos-test-driver-pgjwt.drv
  /nix/store/8yx2wdd6jzr555gb1v2rbm79jxb21ba7-vm-test-run-pgjwt.drv