these 2 derivations will be built:
  /nix/store/5yrm5xx9fs90yg9zir8xh6l0rjs2xdpv-nix-grpc-store-0.2.3.drv
  /nix/store/k0ddn14lcgy66gg1n03sgx4f76ac98rg-nix-grpc-store-exit-stress.drv