these 2 derivations will be built:
  /nix/store/mrsxpb8971a2zcznb1vn4jhbplavsq2z-nix-grpc-store-0.2.2.drv
  /nix/store/8n8mpdxshbq85gmhi9rq00ihxgryjlqm-nix-grpc-store-exit-stress.drv