these 2 derivations will be built:
  /nix/store/lbdbi7h3vi802zys4vydw9d1nfmbzqbf-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/yrj326v7rfi62y8b51l2r6vws7cdfgmm-vm-test-run-wrappers-regression-PSQL-1387.drv