this derivation will be built:
  /nix/store/lcz7y71ni0nw12ng6a3sdkxbw2m19pmy-nixos-anywhere-docs.drv
this path will be fetched (4.8 MiB download, 15.2 MiB unpacked):
  /nix/store/545zjk7kmbmcagry3s30y8p8n37hn275-mdbook-0.5.4