these 2 derivations will be built:
  /nix/store/5n90mngbkhmwb2q1xrv5fc5xx6jnyi0q-nix-grpc-store-0.1.0.drv
  /nix/store/cq4dkrfw278w6x4p4r2d4zkg43zwpxfn-nix-grpc-store-exit-stress.drv