these 2 derivations will be built:
  /nix/store/2bcipzjjw75878lf8ka6pnb0s69axpbq-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/7y6amkxdm5khc7xd3irqiwvx7d47hwn5-vm-test-run-wrappers-regression-PSQL-1387.drv