these 2 derivations will be built:
  /nix/store/ziqmahn4sni5wwgfga4rxql4nwz65r54-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/xv90d6zdrsjq5rf984r2gsmmgpn02h5f-vm-test-run-wrappers-regression-PSQL-1387.drv