these 2 derivations will be built:
  /nix/store/hf9ay7xgzawvdpb6h8gwa1s3b1drnali-openresearch-0.2.18.drv
  /nix/store/1rbpgri8k1qh9d5wds0v4jxfj745bhvw-check-openresearch.drv