these 2 derivations will be built:
  /nix/store/rzgqqv75r74wh3jwvli9chify3hvnnb7-nixos-test-driver-pg_hashids.drv
  /nix/store/ffkjgb8nvspghnhj72fwpnslmp8ynzgg-vm-test-run-pg_hashids.drv