these 2 derivations will be built:
  /nix/store/8frj8h18690qidc96nna73svg5lyp19m-nix-grpc-store-0.2.3.drv
  /nix/store/4xia97iyp3pr85cffxqvici71g8cfvqc-nix-grpc-store-dispatcher.drv