these 4 derivations will be built:
  /nix/store/rgrvivrbaq7zhd70cqha9viqy4ja1wnp-test-script.drv
  /nix/store/bw0wckps43k1pd54y5qr1zkxgi061i6s-driverConfiguration.json.drv
  /nix/store/lvqzimm1v3r6jfll2pn0b7awmq49mqb2-nixos-test-driver-nix-grpc-store-acme-substituter.drv
  /nix/store/jy5cpp0396vdp75si1yhyvksgyc80618-vm-test-run-nix-grpc-store-acme-substituter.drv