these 2 derivations will be built:
  /nix/store/04lh8r6cplzgcsldfzx7j3g25ggxfr2j-nix-grpc-store-0.2.3.drv
  /nix/store/1q0wqmznn4510ak546d6jls0dpsfda2a-nix-grpc-store-exit-stress.drv