these 2 derivations will be built:
  /nix/store/nl429z523wc8jbczq0p5c4fgj6sbl030-nix-grpc-store-0.2.1.drv
  /nix/store/757qr5rb3x0pglwlw2kpq50dnv0kbjsm-nix-grpc-store-exit-stress.drv