these 2 derivations will be built:
  /nix/store/kk4aim4r6h6i7yf67842rv35gpqzav8c-nix-grpc-store-0.2.3.drv
  /nix/store/q6h7kj9xbbxkc39h4jg8dpj4jwkqqpvk-nix-grpc-store-exit-stress.drv