these 2 derivations will be built:
  /nix/store/d1k43m2kfd7hqhsia3f7m9ki58s74qcl-nixos-test-driver-wrappers-regression-PSQL-1387.drv
  /nix/store/c93lyakvn5knm3p90ya1865cz0x8fsr7-vm-test-run-wrappers-regression-PSQL-1387.drv