these 2 derivations will be built:
  /nix/store/h5b4i0z6lq2c40a0wg13952sjq6s15vp-nixos-test-driver-pg_hashids.drv
  /nix/store/03vc67qa8ygk8phibh13hbp41v1vqam9-vm-test-run-pg_hashids.drv