these 2 derivations will be built:
  /nix/store/6qi4nf4jrsvx4bswx2jgi6wnfqlnkwxr-nix-grpc-store-0.2.3.drv
  /nix/store/v93wc967sr2n5f53x69bqgig41jjki6l-nix-grpc-store-exit-stress.drv