these 2 derivations will be built:
  /nix/store/3wvgfrgk10rnnnyp6klly2102lxnd22w-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/rb6b1vcmdpwhaw7cfzm2snni44w6z2dx-vm-test-run-wrappers-regression-PSQL-1387.drv