these 2 derivations will be built:
  /nix/store/ymyrc08kvngq1zwphqqqsscn1gjf30kc-nix-grpc-store-0.2.3.drv
  /nix/store/hhcd372jrzylpwmvbc45aai190y22gv2-nix-grpc-store-exit-stress.drv