these 2 derivations will be built:
  /nix/store/amsnzdbaj3rz45p1xxh4i5b2cnp7zkmi-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/jjnpr861xj6l8gjajxrx908409k13h7r-nix-grpc-store-exit-stress.drv