these 2 derivations will be built:
  /nix/store/lhgx4vwcrnxv164w4y094m092y5y32ry-nix-grpc-store-0.1.0.drv
  /nix/store/1bv5xnp5mqqd5agp00zxaq92hcxwy8pa-nix-grpc-store-exit-stress.drv