these 2 derivations will be built:
  /nix/store/hphgvsxkj7dija8dz7w78bhljgvwfijf-nix-grpc-store-0.2.3.drv
  /nix/store/1q5vxnj16wqns4j7wr3ypzkw7i6k0rzd-nix-grpc-store-exit-stress.drv