Gobble a single file?

[evs-chris]

Gobble will currently fuss at you if you try to gobble a single file, but I may have a use-case for doing so with my toy dependency fetcher giblets. It wants to watch a single config file and pull in directories for each listed dependency, but it is currently required to keep that config file in its own (or at least some non-root) directory for gobbling.

[Rich-Harris]

Giblets looks neat! This makes sense, and doesn't feel like it should be too difficult - just a separate kind of source node that creates an intermediate folder that just contains a symlink to the file.