these 3 derivations will be built:
  /nix/store/1g8ysp0ja2sndxba7zqxi05la9mhkf8r-aven-0.1.44-vendor.drv
  /nix/store/k8yrykpi3arj2yh4qjl23n883fykcgzs-aven-0.1.44.drv
  /nix/store/gygpqwaq8jqmdnxj0sk3n8w1gr0djs7g-check-aven.drv
this path will be fetched (8.3 KiB download, 70.8 KiB unpacked):
  /nix/store/y3jh5kgfxrbn1v7a4i1vnm8pljx6nhx5-libredirect-0