these 2 derivations will be built:
  /nix/store/yrwxw42kkp27s409ap15isy2a7hqnljr-nix-grpc-store-0.2.3.drv
  /nix/store/f84m2nz1zbzp9mbkj2q71gp301mx6xhw-nix-grpc-store-dispatcher.drv