these 2 derivations will be built:
  /nix/store/lj0j6rvi02qglvcnsjkf0mpfbzmbq2qr-nix-grpc-store-0.2.2.drv
  /nix/store/zp34n4spc7r7n00f816k5smqdrq4dlhg-nix-grpc-store-dispatcher.drv