these 2 derivations will be built:
  /nix/store/0jlx4n405kr34r6fsmfpbx9nflg6wssx-nix-grpc-store-0.2.3.drv
  /nix/store/pkh4kxcz1hbp2377i5bpq59hf3i7i5ay-nix-grpc-store-exit-stress.drv