these 2 derivations will be built:
  /nix/store/hb89d55wlwiyb02ckr5x95xg3bg7d5sw-nix-grpc-store-0.1.0-beta.1.drv
  /nix/store/cclss63fy9j8p3a726yjj33i0y3mj0yj-nix-grpc-store-exit-stress.drv