these 2 derivations will be built:
  /nix/store/b8r4xbjp6mzzmlz9plb2k4hfnlqqqpjk-nix-grpc-store-0.1.0.drv
  /nix/store/ixc7mb8fc30r9sxsmr2bf58rygpx43b9-nix-grpc-store-exit-stress.drv