these 4 derivations will be built:
  /nix/store/harnsgq453kr8r6d9vy8wqmfd2iw1rah-aven-0.1.42-vendor-staging.drv
  /nix/store/m1h99j6kjk7n4p2ml41dqnyiv7lr8my5-aven-0.1.42-vendor.drv
  /nix/store/nwbkqa5lvw2szzan4w7kf4i8ppflw1gb-aven-0.1.42.drv
  /nix/store/0f4iqlg7y82rskbr8ygwd5cz1sc264m1-check-aven.drv