these 2 derivations will be built:
  /nix/store/vcv82n9jlv9flna8m8504msg52jfdz47-nix-grpc-store-0.2.2.drv
  /nix/store/l3s6yjxxqphrl7zbk3hgwwk40qprahyk-nix-grpc-store-dispatcher.drv