these 2 derivations will be built:
  /nix/store/47r8hj4d3p9hl034555djnc0izzv2r3f-nix-grpc-store-0.1.0.drv
  /nix/store/5cj0vqaj7rdzbwpkniy51l1dd6g70h94-nix-grpc-store-exit-stress.drv