these 2 derivations will be built:
  /nix/store/ym0ax7ll7dp1acb5a6w47yprgjv73rcv-nix-grpc-store-0.2.3.drv
  /nix/store/qya69gl58dz6b3f438wxa4p07m7r92fi-nix-grpc-store-exit-stress.drv