these 2 derivations will be built:
  /nix/store/cqkvm7idnrsav1jqzjdrqv3b5x526s6w-nix-grpc-store-0.2.3.drv
  /nix/store/npdb74x937222xvz5nv953jhqcpyr7cl-nix-grpc-store-exit-stress.drv