these 2 derivations will be built:
  /nix/store/9yfrz80ylpndjzs2hdw4plkk7s6mbgwb-nix-grpc-store-0.1.0.drv
  /nix/store/n6pq35hr7halkzbzp0iaj1406wyap1dx-nix-grpc-store-exit-stress.drv