these 2 derivations will be built:
  /nix/store/311x1dqdxrqgwpzad2qg1b1lbcxywcwc-nix-grpc-store-0.2.3.drv
  /nix/store/ldijrpz97m4igx9v79akb8ng19skghmj-nix-grpc-store-dispatcher.drv