(use-modules (haunt asset))
Assets represent files on disk that should be copied verbatim to a
site’s output directory. Common types of assets include CSS,
entire directories full of static assets to copy over, thus there is a
directory-assets procedure. However, it’s unlikely
that this procedure needs to be used directly. See see Static Assets for a convenient builder.
Create a list of asset objects to be stored within dest for all files in directory that match keep?, recursively.