these 2 derivations will be built:
  /nix/store/lf2b0358fq6i1pavhwh8yax9a2cw8y5x-nix-grpc-store-0.2.3.drv
  /nix/store/m0w5d40r7wq0f74dbb6bgv0sbwvq15r1-nix-grpc-store-exit-stress.drv