these 2 derivations will be built:
  /nix/store/qm244yj7m8rmakanh40gcgz7mshf8c2f-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/jipr6mfc62d6h1yq9mjf8r6l25bhhf5a-vm-test-run-wrappers-regression-PSQL-1387.drv