these 5 derivations will be built:
  /nix/store/5ls65jlnzb831dnkz7wvrbg01mdxppyf-nix-grpc-store-plugin-0.2.1.drv
  /nix/store/5swj51fmk784vy5gclbvfmh3zm4yai7f-nix-grpc-store-plugin-0.2.1.drv
  /nix/store/966k8mla008m9l7rkjrf1ycq6aq8q7zp-nix-grpc-store-0.2.1.drv
  /nix/store/y9zl1pq50vri2jpy4m3i7qb08knbih69-nix-grpc-store-plugin-0.2.1.drv
  /nix/store/zgwf2v26sgyacza33m82vpjlkq6z65vd-nix-grpc-store-dispatcher.drv