> Oops!  Forgot to push.
>
> It's actually commit 25147f983bdf432b03e8271abe0318f4812f94ba on
> wip-filesearch.

I checked and it works now. Just a tiny nitpick:

The function signature of search-file-package,

--8<---------------cut here---------------start------------->8---
(define (search-file-package pattern . more-patterns) ...)
--8<---------------cut here---------------end--------------->8---

can be rewritten as

--8<---------------cut here---------------start------------->8---
(define (search-file-package . patterns) ...)
--8<---------------cut here---------------end--------------->8---

No need to cons pattern onto more-patterns in the function body.

Thanks for working on this!