these 2 derivations will be built:
  /nix/store/aiacx8g4r7s16kssc0k886hkhyj5c6nw-nix-grpc-store-0.1.0.drv
  /nix/store/byi1w86mvn90i1qqbl8pj0j633yyiimb-nix-grpc-store-exit-stress.drv