these 2 derivations will be built:
  /nix/store/1jrb21inflxrxqyzjizx4q702nnh4kxq-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/qhgnp2sy7mw3s4hfpikfd5nd6c43f6b7-vm-test-run-wrappers-regression-PSQL-1387.drv