these 2 derivations will be built:
  /nix/store/ff22a9nihbmgxfqnlxcjfgqnx5y1ygsx-nix-grpc-store-0.1.0.drv
  /nix/store/fwp2p8lc3bmrqalm0wiiliqm5xcxfjv9-nix-grpc-store-exit-stress.drv