these 2 derivations will be built:
  /nix/store/f8wfq3x9f9mxqs14h2a85z0zhkxpwa21-nix-grpc-store-0.1.0.drv
  /nix/store/99v1arf9f6qmrsamjmp8m8l4yn89g6fy-nix-grpc-store-exit-stress.drv