these 2 derivations will be built:
  /nix/store/3gkmmdvbrr8v492c74q9zdjg8n879jm8-nix-grpc-store-0.2.2.drv
  /nix/store/vj4m3im83xn2ahx4vzw8jhbbri0mg4j8-nix-grpc-store-exit-stress.drv