these 2 derivations will be built:
  /nix/store/prs1sry126rdd0prvcrrf5m9nkcbrdhx-nix-grpc-store-0.1.0.drv
  /nix/store/24wgmpmxw4z2bdvm8ricvp2zmn2yxsxp-nix-grpc-store-dispatcher.drv