these 2 derivations will be built:
  /nix/store/qqyb67qiff6333f0pw45mg3d6as6qbkx-nixos-test-driver-pg_hashids.drv
  /nix/store/hqzdym3cjvg2iy926c1rd664jk8mrmgi-vm-test-run-pg_hashids.drv