these 2 derivations will be built:
  /nix/store/7hql6pha0zbfc32pdmxmqs2ihanrsn9q-nix-grpc-store-0.1.0.drv
  /nix/store/339v1am6mpmyv79idybfja7mik4ksa7v-nix-grpc-store-dispatcher.drv