these 2 derivations will be built:
  /nix/store/kq4kps8ry1dc2acj4l51gy8iiw0sb4zn-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/n92zq9l3b1kjyij89vdlklbml1jl18sv-nix-grpc-store-exit-stress.drv