these 2 derivations will be built:
  /nix/store/v61101mbi0slpb9a76cpm2d3nm7i4zq0-nix-grpc-store-0.1.0.drv
  /nix/store/m59lzjgv9snryvy69iin7r9kzk6rdhi2-nix-grpc-store-exit-stress.drv