these 6 derivations will be built:
  /nix/store/2w4flpqjalhbby6cbrg0siaif6yxgr5n-nixos-system-server-test.drv
  /nix/store/wdrvr02qgskxd0pq556cwbav5x3sz6q4-closure-info.drv
  /nix/store/7cy0i30wy58r3y4nn7pq0h8argljrqam-run-nixos-vm.drv
  /nix/store/bdcgmfrx4rvbcxhsh693yd2iz06v5nnp-nixos-vm.drv
  /nix/store/jdjfbshwlma99lnjl3yb9n129slfgndf-nixos-test-driver-pgjwt.drv
  /nix/store/x97ajkdpyb4cg1z44ham3n9xvxvnyg4h-vm-test-run-pgjwt.drv