these 2 derivations will be built:
  /nix/store/a9knxcb2n2gibzcl8k65j8yyh00gfgg5-nix-grpc-store-0.2.3.drv
  /nix/store/mpqsaghn5bn5d5f2x0plyp6pq6bydzhn-nix-grpc-store-exit-stress.drv