these 2 derivations will be built:
  /nix/store/p1388vq57a8ick40v0sg8knflaqps18k-nix-grpc-store-0.2.3.drv
  /nix/store/2vr8jghy8ycgalj9bk9007pdwvn656yb-nix-grpc-store-exit-stress.drv