these 2 derivations will be built:
  /nix/store/w73w2g8x7ds3bcxv46a7z3k21w14wjc2-nix-grpc-store-0.2.0.drv
  /nix/store/q413pcwf68syjr1lwd0hmm5bvrnncxiv-nix-grpc-store-exit-stress.drv