these 2 derivations will be built:
  /nix/store/hh5yc89biq10yvrqd4jj78hcfqajb8pl-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/my1d1lfshbay26rk6dhzl3b1z8klv0x7-vm-test-run-wrappers-regression-PSQL-1387.drv