these 2 derivations will be built:
  /nix/store/54cxvy0d2q695gj4n47qn1rlp9qg3xry-nix-grpc-store-0.1.0.drv
  /nix/store/vn375bkqzm88jm8q0y67fwcjffffdqyg-nix-grpc-store-exit-stress.drv