> Is there a reason why you didn't use get-free-disk-space?  AFAICT,
> using that would make your package more portable, since 'find' and
> 'du' are only available by default on Posix hosts.

Hmm... Isn't this the complement of what this package does, that is, computing
the used space?

I don't see how get-free-disk-space could be used here, it does not tell the
space used by files or folders.  Let me know if I misunderstood.

-- 
Pierre Neidhardt
https://ambrevar.xyz/