these 2 derivations will be built:
  /nix/store/4m7gg079i0gd72nx9ziw7n52463kn5s2-nix-grpc-store-0.1.0.drv
  /nix/store/0zwmf2n95apqwfhrk85k92bqy06axc5x-nix-grpc-store-exit-stress.drv