these 2 derivations will be built:
  /nix/store/7hql6pha0zbfc32pdmxmqs2ihanrsn9q-nix-grpc-store-0.1.0.drv
  /nix/store/87999krlb4ahh6s0sij8wmv7c7ndbsgh-nix-grpc-store-exit-stress.drv