these 2 derivations will be built:
  /nix/store/f9f7vbxdzc03ilavk13a5d2mc656qg2d-nix-grpc-store-0.1.0-beta.3.drv
  /nix/store/rjmzh1sld9srz2bjqmn333yjp98bv9fn-nix-grpc-store-dispatcher.drv