these 2 derivations will be built:
  /nix/store/kbp7s6zf25v29k2h5ic2ddhfcv63slbq-nix-grpc-store-0.2.3.drv
  /nix/store/qhmadgkwfk40sh3yvxh9hl6gxaia3iv0-nix-grpc-store-dispatcher.drv