these 2 derivations will be built:
  /nix/store/ni9cxjdrq27zwcadr5s51kswq9rc4d1z-nix-grpc-store-0.2.3.drv
  /nix/store/90pnzizk4j9rvs785jxg3l5lrnrjs079-nix-grpc-store-dispatcher.drv