these 2 derivations will be built:
  /nix/store/wq738k910ksqavrz4xvifywjca3mh7cp-nix-grpc-store-0.2.2.drv
  /nix/store/lw173qbxrg3g5zdnb53p1xicwrs436rs-nix-grpc-store-dispatcher.drv