this derivation will be built:
  /nix/store/pc46wv3vm70424vk06dizd37pa6xci7i-nixos-anywhere-docs.drv
this path will be fetched (4.8 MiB download, 15.2 MiB unpacked):
  /nix/store/bgnw2i5b35i2h9llbsparbn0q6b450fm-mdbook-0.5.4