these 2 derivations will be built:
  /nix/store/1am3l2l0vb2ywl1wxvw5g10kwpbkzciz-nix-grpc-store-0.2.3.drv
  /nix/store/sz19965r6r53s21417vvb2c7r9kivwmy-nix-grpc-store-exit-stress.drv