these 2 derivations will be built:
  /nix/store/yqc74fqdq0h88d1nbs5mcygkpxvzdi1z-nix-grpc-store-0.2.1.drv
  /nix/store/c05dspy63v4qqb1c1y03yfzzsnw335s5-nix-grpc-store-dispatcher.drv